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Cum Swallowing
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Jealousy: Part 3 by LoverGurl818
Rated 62.5%, Read 9621 times, Posted Wed 4th of May 2011
Fiction , Anal, Blowjob, Cum Swallowing, Threesome -
Ch. 71: Pirates Own Their Wench by SailorVibe
«Morning sex with nubile teen. Then watch her boyfriend and uncle take advantage of her.»
Rated 85%, Read 9621 times, Posted Mon 10th of June 2024
Fantasy , Anal, Blowjob, Cum Swallowing, Male Male/Teen Female, Male/Teen Female, Males / Female, Older Male / Female, Oral Sex, Teen, Threesome, Young -
TRC - Oni and the Farmer Ch. 10 (Male x Monster Girl) by BluDraygn
«A young farmer with an ailing mother gets help from a large, blue-skinned, demon-like woman called an oni in return for a little bit of sexy time. This leads him on a journey that puts him into contact, and often deep inside, a variety of monster girls.»
Rated 74.5%, Read 9618 times, Posted Wed 15th of January 2020
Fiction , Anal, Blowjob, Consensual Sex, Cum Swallowing, Erotica, Hardcore, Male / Females, Male/Female, Monster, Oral Sex, Threesome -
The call of the Fay by Unknown user
Rated 86.7%, Read 9612 times, Posted Sat 31st of August 2013
Fantasy , Consensual Sex, Cum Swallowing, Erotica, Male/Female, Mind Control, Oral Sex, Written by women -
SEDUCED BY TWO BOYS FROM THE BALLET by CecilBCK
«Veronica and I are lovers, we are also gender fluid, bi-sexual, James told two boys from a ballet corps we were planning to seduce.»
Rated 75.4%, Read 9606 times, Posted Tue 13th of February 2024
True Story , Bi-sexual, Blowjob, Boy / Boy, Cheating, Consensual Sex, Cuckold, Cum Swallowing, Erotica, Exhibitionism, Extreme, Female exhibitionist, Group Sex, Hardcore, Male / Older Female, Older Female / Males, Oral Sex, Voyeurism -
Zombies...To Save A New Man (Fixed) by Facetheworld09
Rated 62.5%, Read 9597 times, Posted Sun 2nd of December 2012
Fiction , Blowjob, Cum Swallowing, Teen Male/Teen Female -
A Night with my Friend [Furry | M/M] by Hideki Fujikawa
«Two Anthro-Wolves finally confess their love for one another in a passionate night...»
Rated 87.5%, Read 9594 times, Posted Sun 11th of September 2016
Fantasy , Anal, Blowjob, Consensual Sex, Cum Swallowing, Gay, Romance -
All the Power Pt. 7: Barria by thisismyname113
«Tetenia and Daymon accompany His Supremacy on a trip His new palace in the Subject Kingdom of Barria, where he takes yet more concubines.»
Rated 80%, Read 9543 times, Posted Wed 21st of February 2018
Fantasm , Anal, Ass to mouth, Blowjob, Cum Swallowing, Domination/submission, Exhibitionism, Group Sex, Male / Females -
a new friend for Carl Grimes Part 2_(2) by dragons arch
Rated 58.8%, Read 9537 times, Posted Thu 19th of February 2015
Fiction , Blowjob, Boy / Boy, Consensual Sex, Cum Swallowing -
King Dong: A Monster Movie Parody Act 2 by Perv Otaku
«Jack and Anne shoot a scene for the porn film.»
Rated 88.6%, Read 9516 times, Posted Sun 21st of April 2019
Fantasy , Blowjob, Cum Swallowing, Male/Female, Oral Sex -
Latex Futa Nuns From Hell - Chapter 09 - Queen Takes Knight by [James Bondage]
«A mysterious benefactor approaches the convent seeking an audience with Mistress Superior.»
Rated 67.9%, Read 9498 times, Posted Tue 24th of May 2022
Fiction , Anal, Ass to mouth, Authoritarian, BDSM, Bondage and restriction, Consensual Sex, Cum Swallowing, Discipline, Domination/submission, Extreme, Female Domination, Hardcore, Job/Place-of-work, Latex fetish, Non-consensual sex, Oral Sex, Reluctance, Sado-Masochism, Slavery, Threesome, Torture, Transsexual, Violence -
KITTEN AND HER FRIENDS by CecilBCK
«My man and I both had a hand in writing this story about our meeting with a woman a little older than us, three nineteen-year old girls, an Asian couple. And new and exciting sexual pleasure for us both.»
Rated 83.3%, Read 9492 times, Posted Mon 4th of March 2024
True Story , Ass to mouth, Bi-sexual, Blowjob, Body modification, Consensual Sex, Cum Swallowing, Erotica, Exhibitionism, Female / Girl, Female exhibitionist, Female/Female, Girls / Female, Group Sex, Lesbian, Male / Female Teens, Male / Older Female, Oral Sex, Teen, Threesome, Voyeurism, Written by women -
The Futa's Mind-Controlling Panties Chapter 13: Futa Mind-Controls Her Hot Boss by mypenname3000
«Mildred arrives at work, ready to dominate it with her mind-controlling panties.»
Rated 85.7%, Read 9492 times, Posted Wed 15th of April 2020
Diary , Anal, Asian, Blowjob, Cum Swallowing, Female/Female, Lesbian, Mind Control, Oral Sex, Transgendered -
Sex goddess - part 1_(0) by Nirali
«A broken heart starts healing in a bus journey»
Rated 78.9%, Read 9489 times, Posted Fri 10th of February 2017
Fiction , Blowjob, Cum Swallowing, Erotica, Voyeurism -
Ch. 69: Wanda And Travis Tie Me Up by SailorVibe
«Wanda and Travis visit and tie me up. Two cocks and seven holes makes for great odds for outrageous sex.»
Rated 94%, Read 9489 times, Posted Tue 28th of May 2024
Fantasy , Anal, Ass to mouth, BDSM, Blowjob, Bondage and restriction, Cum Swallowing, Males / Female, Older Male / Female, Oral Sex, Threesome -
Back In The Saddle with My Amazon Queen by FootLover44
«After a dry spell. I get to fuck a good piece of ass»
Rated 84.6%, Read 9486 times, Posted Wed 19th of October 2022
True Story , Blowjob, Cum Swallowing, Erotica, Foot or shoe fetish, Male/Female, Oral Sex -
Loving Lista by DigitalDragon
Rated 61.9%, Read 9471 times, Posted Mon 25th of February 2013
Fiction , Blowjob, Cum Swallowing, Oral Sex, Teen, Teen Male/Teen Female -
INNOCENT DEVIL'S HAREM CH. 18 by KaizerWolf
«His two women help save Hot New harem girl.»
Rated 80.3%, Read 9471 times, Posted Tue 20th of September 2022
Fantasy , Blowjob, Cum Swallowing, Erotica, Female Domination, First Time, Group Sex, Male / Females, Male / Older Female, Mature, Oral Sex, Threesome -
The World's First Futa 11 - Futa's Wild Presidency Chapter 2: Futa's First English Delight by mypenname3000
«The futa-president conducts wild diplomacy with the British Prime Minister.»
Rated 80%, Read 9462 times, Posted Tue 17th of July 2018
Fiction , Anal, Blowjob, Cheating, Cum Swallowing, Exhibitionism, Female exhibitionist, Female/Female, Interracial, Oral Sex, Threesome, Wife -
Johanna Morgenthau and the Search for the Cinnamon Ice Cream Chapter 04 by MissMorgenthau
«Johanna becomes part of Michaels life. Her wish for adventures comes finally true but maybe she bit of more than she can chew.»
Rated 81.5%, Read 9456 times, Posted Thu 12th of September 2024
Fiction , Anal, Ass to mouth, BDSM, Blowjob, Bondage and restriction, Consensual Sex, Cruelty, Cum Swallowing, Domination/submission, Group Sex, Hardcore, Humiliation, Male / Female Teens, Male Domination, Sado-Masochism, Spanking, Teen, Teen Male/Teen Female, Threesome, Torture -
How Nudes Made Damian Famous - Chapter Two by Why_Guy1005
«Leaving where we picked off, Damian’s dick pick has surfaced on the schools social media page and everyone in the District has seen it. How will this change Damian’s life.»
Rated 90%, Read 9447 times, Posted Sat 15th of June 2024
Diary , Anal, Ass to mouth, Bi-sexual, Blowjob, Consensual Sex, Cum Swallowing, Gay, Job/Place-of-work, Male / Older Female, Teen Male / Teen Male -
Jena and Lisi Ch. 2 by Jenny Lane
«Jena and Lisi are taken aboard the Finalizer.»
Rated 78.4%, Read 9432 times, Posted Thu 28th of June 2018
Science-Fiction , Blowjob, Cum Swallowing, Transsexual -
Emma's Wedding Dress Part 2 by Red_Elements
«Beautiful and successful Emma has a deep-seated cum obsession that drew her into making an adult film. Her wedding is only weeks away and the price of her decision has come due.»
Rated 89.3%, Read 9414 times, Posted Thu 13th of June 2024
Fiction , Bi-sexual, Blowjob, Cheating, Coercion, Cum Swallowing, Group Sex, Hardcore, Reluctance -
Becoming Kim by CDKimberlyMaj
«The encounter that led me to become Kim full time»
Rated 92.9%, Read 9381 times, Posted Wed 19th of June 2024
True Story , Bi-sexual, Consensual Sex, Cum Swallowing, Transvestite -
Freedom Chap-1 by Myevilside
Rated 72.2%, Read 9366 times, Posted Mon 27th of July 2015
Fantasm , Authoritarian, Cum Swallowing, Interracial -
ALANA STRETCHES HER SEXUAL BOUNDARIES. by CecilBCK
«On a Monday night my lady Alana and I are at classy cocktail party for the launch of a new product with lots of other business couples and colleagues all around our age.»
Rated 84.8%, Read 9363 times, Posted Wed 17th of November 2021
True Story , Ass to mouth, Bi-sexual, Blowjob, Consensual Sex, Cuckold, Cum Swallowing, Erotica, Exhibitionism, Gay, Group Sex, Hardcore, Lesbian, Oral Sex, Threesome -
My unexpected journey - part 5 by Desire2beagurl
«My fantasy of a journey I would love to take»
Rated 85.5%, Read 9360 times, Posted Thu 25th of November 2021
Fantasy , Anal, Ass to mouth, Blowjob, Consensual Sex, Cum Swallowing, Humiliation, Non-consensual sex, Transgendered -
Suite Penetration with Jessica Thot by Nocturnal Scribe
«Follows after the events of 'Being the Night Shift Guy. Chapter 7' but can be read as a stand alone story. Jessica has been hired by a hotel heir who has paid for the privilege of being the first to enter her bottom.»
Rated 80.9%, Read 9345 times, Posted Wed 19th of April 2023
Fantasy , Anal, Authoritarian, Black, Blowjob, Cum Swallowing, Prostitution, Role-playing -
Room Service (Anna 2) by nikkitassassin
«Love after hospital»
Rated 87.5%, Read 9339 times, Posted Sun 29th of January 2017
Fiction , Authoritarian, Blowjob, Consensual Sex, Cum Swallowing, Domination/submission, Job/Place-of-work, Male/Female, Oral Sex, Romance -
Abductions R Us by canemont
«My buddy and I were brainstorming on ways to make some quick cash. We came up with the idea to be hired by a client who wanted to force someone to have sex with him. We had a plan.»
Rated 94.7%, Read 9333 times, Posted Sat 21st of June 2025
Fiction , Ass to mouth, Blowjob, Cum Swallowing, Domination/submission, Humiliation, Non-consensual sex, Scatology -
Sorority Sisters by SailorVibe
«Crash a fraternity party on the beach. Two hot college babes get me in a tent for some wild sex. Two sluts, three holes each. Heaven on earth.»
Rated 87.7%, Read 9333 times, Posted Sat 8th of November 2025
Fantasy , Anal, Ass to mouth, Ass to pussy, Blowjob, Consensual Sex, Cum Swallowing, Group Sex, Male / Female Teens, Older Male / Female, Oral Sex, Threesome, Young -
Size Queen House Slaves Ch. 2 by DiscipleN
«A surprise visit in the night and the ill-considered flaunting that followed.»
Rated 84.4%, Read 9324 times, Posted Thu 4th of January 2024
Fiction , Consensual Sex, Cum Swallowing, Domination/submission, Incest, Reluctance, Slavery, Teen Male / Female -
Our story! My fantasy Part 4 by Chesmoore1148
«With John at home with his wife, I have to find something or someone to fill my time with!»
Rated 86.4%, Read 9318 times, Posted Mon 4th of December 2017
Fiction , Bi-sexual, Blowjob, Cum Swallowing, Hardcore, Male/Female, Mature, Oral Sex, Written by women -
Meeting a new Friend by mikeb19552
«A first meeting for cocksucking»
Rated 85.7%, Read 9315 times, Posted Thu 2nd of June 2016
Fantasy , Cum Swallowing, Domination/submission, Humiliation, Spanking -
The Futa's Mind-Controlling Panties Chapter 15: Futa-Teacher Enjoys Her Panties by mypenname3000
«The futa's teacher puts on her mind-controlling panties early!»
Rated 76.3%, Read 9285 times, Posted Wed 29th of April 2020
Fantasy , Blowjob, Cuckold, Cum Swallowing, Exhibitionism, Female exhibitionist, Female/Female, Group Sex, Male/Female, Mind Control, School, Transgendered, Voyeurism, Wife -
The Distraction by mao825
Rated 81.8%, Read 9276 times, Posted Fri 14th of June 2013
Fiction , Blowjob, Consensual Sex, Cum Swallowing, Male/Female, Oral Sex, Written by women -
Lost In Hazel Eyes Part4 by BlossomJade
«Cousins Rhea and Shan explore their sexuality together.»
Rated 90.7%, Read 9276 times, Posted Wed 24th of June 2020
Diary , Blowjob, Cum Swallowing, Incest, Oral Sex -
BUYING MY STEP-SISTER, PT.12A-BONUS! by smokycat67
«On a business trip I again hook up with my step-sister»
Rated 36.4%, Read 9273 times, Posted Mon 30th of May 2022
Fiction , Blowjob, Consensual Sex, Cum Swallowing, Incest, Male/Female, Prostitution -
Player's Trickbook Chapter 3 by Eroswritings
Rated 73.9%, Read 9273 times, Posted Mon 23rd of January 2012
Fiction , Anal, Blowjob, Consensual Sex, Cum Swallowing, Male/Female -
AUDITIONING THE NEW ESCORT by CecilBCK
«My agent Ada has asked me to help her audition some new talent.»
Rated 76.1%, Read 9267 times, Posted Thu 1st of February 2024
True Story , Ass to mouth, Bi-sexual, Blowjob, Body modification, Cum Swallowing, Erotica, Exhibitionism, Group Sex, Hardcore, Oral Sex, Role-playing -
Mistress Of The Marsh by [James Bondage]
«A young man embarking on a rite of passage is ambushed by a hedonistic Sorceress.»
Rated 75%, Read 9264 times, Posted Sat 26th of August 2023
Fantasy , Anal, Authoritarian, BDSM, Blowjob, Bondage and restriction, Cum Swallowing, Domination/submission, Female Domination, Hardcore, Mind Control, Monster, Non-consensual sex, Oral Sex, Slavery, Transsexual -
Perfect life by CookiesLady
«Andromeda knows Matthew, the love of his life. They begin their sex story, then understand that they love and belong together»
Rated 56%, Read 9258 times, Posted Mon 8th of June 2020
Fantasy , BDSM, Body modification, Cum Swallowing, Lactation, Romance, Spanking, Written by women -
Futa Naked In School 09 - Innocent Girl's Futa Awakening 3: Lola's Futa Epiphany by mypenname3000
«Lola has an epiphany about how her Purity Society should continue forward!»
Rated 72.2%, Read 9237 times, Posted Tue 11th of June 2019
Fiction , Anal, Cum Swallowing, Exhibitionism, Female exhibitionist, Female solo, Female/Female, First Time, Lesbian, Masturbation, Oral Sex, School, Transgendered, Voyeurism -
Late Night Surprise_(1) by BlackUmbra
Rated 66.7%, Read 9237 times, Posted Sat 19th of October 2013
Fiction , Bondage and restriction, Consensual Sex, Cum Swallowing, Domination/submission, Erotica, Oral Sex, Spanking -
FRANCESCA’S HUNG TRANNY by CecilBCK
«When I was first unfaithful to my husband, I was forty-years old and long married. Then I met Daniel and some of his friends, male and female who introduced me to whole new world of sexual pleasure. Now I have a new man Raoul who introduced me to tranny sex.»
Rated 76.3%, Read 9234 times, Posted Mon 3rd of March 2025
True Story , Bi-sexual, Blowjob, Cuckold, Cum Swallowing, Erotica, Exhibitionism, Hardcore, Masturbation, Oral Sex, Threesome, Transvestite, Voyeurism, Written by women -
TV Street Whore by Gingerneo77
«I put myself up for an evening as a paid hokker»
Rated 70.4%, Read 9234 times, Posted Tue 23rd of March 2021
Fantasy , Consensual Sex, Cum Swallowing, Exhibitionism, Prostitution -
The Affair Chapter 2:sending Nena in subspace by Darkone82
«By darkone82»
Rated 57.7%, Read 9222 times, Posted Sat 13th of October 2018
Fiction , Blowjob, Cheating, Cum Swallowing, Oral Sex -
What I would do to you by cov3nant
Rated 66.7%, Read 9210 times, Posted Fri 13th of December 2013
Fantasy , Ass to mouth, Consensual Sex, Cum Swallowing, Erotica, Male/Female, Masturbation, Oral Sex -
Superb Control by SailorVibe
«Get another ultimate blowjob and get to fuck pussy of unusual woman with strange kinks.»
Rated 89.6%, Read 9210 times, Posted Wed 17th of September 2025
Fantasy , Blowjob, Consensual Sex, Cum Swallowing, Male/Female, Older Male / Female, Oral Sex -
I Take My NIece's Cherry 18- Debra's Tryout by Rangerfan6165
«Lisa arrives home to a big surprise involving her dad, brother and mom. She is pleasantly surprised and all for the proposal; Debra, the first of the new recruits, has her tryout with Uncle Dave and Nicole. Her skills ensure that she makes the roster.»
Rated 88.1%, Read 9207 times, Posted Fri 3rd of October 2025
Fiction , Blowjob, Cum Swallowing, Female/Female, Foot or shoe fetish, Incest, Lesbian, Male / Female Teens, Masturbation, Oral Sex, Pregnant, Teen, Threesome, Young -
The Divine Comedy - Chapter 3: "Poker Face" by TheNovalist
«The national finals loom for James but other forces are gathering»
Rated 93.8%, Read 9201 times, Posted Wed 29th of August 2018
Fiction , Blowjob, Cum Swallowing, Group Sex, Male / Females, Oral Sex, Threesome -
Night Time PlayTime by alwayssnape1
Rated 50%, Read 9180 times, Posted Fri 31st of July 2015
Fiction , Blowjob, Cum Swallowing, Male/Female -
Meeting Mr Right 3 by Layla CS
«Tricked into thinking he didn't want me»
Rated 71.4%, Read 9171 times, Posted Sat 29th of April 2017
Fantasy , Anal, Ass to mouth, Blowjob, Cum Swallowing, Group Sex, Males / Female, Written by women -
STRIPPER LOOKING FOR WAYS TO MAKE MORE MONEY - PT3 - BROOKE TRIES BEING A FLUFFER AT A PORN SHOOT by FrameByFrame
«Still needing to find ways to make more money, Brooke hears about a porn shoot paying good money for 'fluffers', so she agrees to check it out.»
Rated 92.3%, Read 9150 times, Posted Fri 24th of May 2024
Fiction , Blowjob, Consensual Sex, Cum Swallowing, Female/Female, Males / Female, Oral Sex, Written by women -
Louise works the room by MazFucker
Rated 80%, Read 9147 times, Posted Mon 4th of July 2011
Fiction , Cum Swallowing -
True love_(0) by CHIx98
Rated 88.2%, Read 9141 times, Posted Tue 3rd of February 2015
Fiction , Blowjob, Cum Swallowing, Oral Sex, Romance -
SCARLET WANTS TO MEET TWO BOYS FROM THE GYM by CecilBCK
«One of my lady's girlfriends wants to watch her be sexually pleasured by two boys from the gym.»
Rated 67.6%, Read 9141 times, Posted Thu 16th of March 2023
True Story , Ass to mouth, Bi-sexual, Blowjob, Consensual Sex, Cuckold, Cum Swallowing, Erotica, Exhibitionism, Female exhibitionist, Female/Female, Group Sex, Lesbian, Male / Females, Male / Older Female, Males / Females, Older Female / Males, Oral Sex, Threesome, Voyeurism -
my exciting trip to Ahmedabad_(1) by Unknown user
Rated 63.2%, Read 9135 times, Posted Thu 16th of May 2013
True Story , Cum Swallowing, Written by women -
Futa MiIk Café by JasonSensation
«Lilly suffers from an unbearably horny giant futa cock. She spends her days giving herself head and chugging down her own cum. Noticing her semen tastes delicious she decides to open her own café.»
Rated 80%, Read 9132 times, Posted Thu 14th of December 2023
Fantasm , Cum Swallowing -
Sharing Cindy Chapter 33 "Cindy and Jim Make a Video For Me" by KMan8698
Rated 80.5%, Read 9129 times, Posted Fri 20th of February 2015
True Story , Blowjob, Consensual Sex, Cum Swallowing, Oral Sex, Wife -
Dancefloor Delight by Harvey
Rated 81%, Read 9129 times, Posted Tue 26th of April 2011
Fiction , Blowjob, Cum Swallowing, Erotica, Male/Female, Oral Sex -
Living in Nevada a Long Time Ago #4 – Deep in the state.. by Sticker Patch
«Probably my last story about me..not much sex and more about being stupid..»
Rated 66.7%, Read 9123 times, Posted Fri 1st of November 2019
Diary , Bi-sexual, Blowjob, Cum Swallowing, Exhibitionism, Rape -
A Walk Not in the Park by StAugustus
«Guy encounters lonely coed on his daily walk»
Rated 79.6%, Read 9123 times, Posted Mon 4th of January 2021
Fiction , Blowjob, Consensual Sex, Cum Swallowing, Male/Teen Female -
Death ALWAYS Wears Black - Chapter 2 & 3 by TheDevilsOwn
«The night continues for the Lord Assassin and his new toy as they move from Earth to his own private kingdom.»
Rated 81.5%, Read 9108 times, Posted Wed 5th of January 2022
Fantasy , Anal, Authoritarian, BDSM, Blowjob, Bondage and restriction, Cum Swallowing, Domination/submission, Hardcore, Male/Teen Female, Non-consensual sex -
Vixen The Problem by Eccho
«A fox girl finally finding someone who doesn't treat her like dirt. Yup. Nothing but good vibes from here on out.»
Rated 71.9%, Read 9093 times, Posted Tue 28th of November 2023
Fiction , Blowjob, Consensual Sex, Cruelty, Cum Swallowing, Domination/submission, Erotica, First Time, Humiliation, Male Domination, Male/Female, Monster, Murder, Oral Sex, Romance, Virginity -
Gina in Charge by paddler20
«A woman takes control over three guys and has her way with them.»
Rated 91.7%, Read 9087 times, Posted Mon 24th of February 2025
Diary , Anal, Bi-sexual, Boys/Teen Female, Cum Swallowing, Gay, Interracial -
Growing Up chapter 12 by GoatRavisher
«I seem to have the reputation of a sex guru in the Sorority»
Rated 71%, Read 9075 times, Posted Fri 7th of August 2020
Diary , Anal, Bi-sexual, Blowjob, Cum Swallowing, Humiliation, Teen Male/Teen Females, Transvestite -
The Futa's Mind-Controlling Panties Chapter 20: The Naughty Futa's Punishment by mypenname3000
«Sasha Ford thinks she's gotten away with stealing her mind-controlling panties to the paradise of Miami!»
Rated 89.5%, Read 9066 times, Posted Wed 3rd of June 2020
Fiction , Anal, Blowjob, Cum Swallowing, Exhibitionism, Female/Female, Interracial, Lesbian, Male/Female, Mind Control, Transgendered, Virginity, Voyeurism -
Ch. 61: Susan Takes A Load by SailorVibe
«Tiffany. El. Susan. Kate. The holes to fuck seemed endless.»
Rated 90%, Read 9063 times, Posted Tue 21st of May 2024
Fantasy , Blowjob, Bondage and restriction, Boys/Teen Female, Cum Swallowing, Incest, Male / Female Teens, Oral Sex, Teen, Young -
Once licked, twice remembered by mikedionne
«She missed his smile and he missed his laugh but when her new boyfriend wouldn't do what she needed she knew just who to call.»
Rated 67.6%, Read 9042 times, Posted Tue 2nd of October 2018
True Story , Blowjob, Cheating, Cum Swallowing, Oral Sex