At a party a woman tells a Marine in uniform, "You military guys are so rigid and single minded. You really should lighten up, life is about sex, when did you last have sex?"
The Marine replies, "1955."
The woman frowns and says, "See what I mean, that's nearly 50 years ago."
The Marine says, "No ma'am," and looks at his watch and adds, "It's only 2130."