So this kid is walking down the street and behind him he is pulling a squashed frog. He finally gets to where he is going and it turns out to be the local cat house. He goes inside and tells the Madam that he has money and would like to have sex with a certain girl.
The madam questions him at first but since he does have the money figures why the hell not. So, she asks the boy, "Which girl?"
"I would like to have sex with Christie" the boy answered.
" Why Christie?" Asks the madam. " She is the most diseased girl I got. I have several younger and cleaner girls that you could have"
" All I know is that I hear all the men say that have to get a shot after having sex with her. I have the money, now I want to have sex with her."
The madam relents and shows the boy upstairs. After a little while he comes back down and is getting ready to leave when the madam says, " I have two questions, why did you want to have sex with Christie and why are you dragging a squashed frog behind you?"
So the boy answers, " Tonight my parents will go out. They always get me the same babysitter because she doesn't charge much, but she does have a fondness for young boys and will have sex with me like she always does. After which she will have what I just got from Christie. When they get back home my dad will take her home but on the way he will stop and have his way with her, and thus catching the disease that I gave her."
" When my dad gets back home he will go upstairs and make love to my mom giving her the disease that he got from the babysitter. In the morning, after my dad leaves for work the milkman will come by and will have his way with my mom and he will get the same disease."
After all this the madam asks, "Why would you want to give the milkman an std?"
The boy responds " CAUSE THAT'S THE GOD DAMN BASTARD WHO RAN OVER MY FROG!!!!!!!"