Lemon

A man sitting at a bar claiming to be the world's strongest man, squeezed every drop of juice from a lemon. Then said, "Whoever can squeeze another drop from this lemon will be the world's strongest and will have earned $100." Just about every man at the bar tried without luck, then a skinny, wimpy looking guy walks up and squeezes three more drops from the lemon. The strong man asked, "How did you do that?" the little man replied, "I am an IRS agent" as he walked out.