A weedy old man on the train offers him three wishes. He's the sceptic and a smart ass so he names two sexually charged wishes to shock the old guy. "Granted" he replies. They arrange to meet again in three weeks to hear the third wish. He thinks nothing of it until hours later he discovers that his second wish has come true. He decides to see if his first wish also comes true.
A young couple hosts a bus trip to Las Vegas. He's angry because his girlfriend won't put out. She's adament about not doing so because she feels that they need to develop their relationship fully before they consummate it. He goes along with it because he knows how head strong she is and does not want to lose her. Roles reverse leading to unforeseen consequences.