Buy Another Condom, Fool
A guy is on a trip with his girlfriend and he only has one condom. About 30 minutes, they can't stand it anymore and have sex. After sex, they throw the condom out the window and keep driving. Half an hour later, they are both quite horny again, so they drive back, retrieve the condom and have sex. They leave it by the roadside and continue driving. Half an hour, the urge strikes again, so they drive back, only to find a small child holding the condom.
"Little boy," says the man. "I'll give you $50 for that condom!"
"Okay!" says the boy, chuckling to himself. They exchange money and the condom, and the couple drives off. Still giggling, the boy says to himself "Fooled them. I can't believe the guy wanted his twinkie back after I sucked the cream out."