Bilateral Thinking Puzzles

Q: It is a dark and stormy night. A man comes home to find his cat curled up in front of a cozy fire, dead. Why?

A: The man is a travel agent. He had sold someone two tickets for an ocean voyage, one ticket round-trip and one ticket one-way.

Another

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