Bilateral Thinking Puzzles

Q: A man went to a party and drank some of the punch. He then left early. Everyone else at the party who drank the punch subsequently died of poisoning. Why did the man not die?

A: The man was listening to a radio programme where the DJ calls a listener and asks them a question for a prize. They announce the name of the listener they are calling - it is the man's wife, yet another man (her lover) answered the phone.

Another

This is another thing that seemed funnier a third of the way into writing it, from the Surrealist. 19th August 2005.