Bilateral Thinking Puzzles

Q: A man gives undeniable evidence in court that his wife was murdered by his brother. However, the judge determines that his brother cannot be punished. Why?

A: The man had visited his wife in hospital. She was on a life-support machine. As he was walking down the stairs all the lights went out.

Another

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