What is a really funny one-liner?

One really funny one-liner is, "I don't suffer from insanity. I enjoy every minute of it!" Another good one is, "A penny saved is a penny that will sit around in a jar for five years."

A one-liner is a short joke or witty remark that is generally expressed in one or two brief sentences. Funny one-liners manage to be succinct while revealing or satirizing universal life truths. Family, work, love, children and religion are common subjects of one-liners. Some of the most notable comedians who have delivered funny one-liners include Woody Allen, Groucho Marx, Bob Newhart, Joan Rivers and Terry Jones.