One morning, a CEO was opening mail from his company's suggestion box. Taking a single sheet of paper from an envelope he found written on it only one word:"Schmuck". Later that day, at a meeting of the board, he said, "I've known many people who have written letters and forgot to sign their names. But, today, I received a message from someone who signed his name.... and forgot to write the letter."
(Thanks to The Great Chimp).