mu /moo/ The correct answer to the classic trick question Have you stopped beating your wife yet?. Assuming that you have no wife or you have never beaten your wife, the answer yes is wrong because it implies that you used to beat your wife and then stopped, but no is worse because it suggests that you have one and are still beating her. According to various Discordians and Douglas Hofstadter the correct answer is usually mu , a Japanese word alleged to mean Your question cannot be answered because it depends on incorrect assumptions. Hackers tend to be sensitive to logical inadequacies in language, and many have adopted this suggestion with enthusiasm. The word mu is actually from Chinese, meaning nothing ; it is used in mainstream Japanese in that sense. In Chinese it can also mean have not (as in I have not done it ), or lack of , which may or may not be a definite, complete 'nothing').