The only joke I can ever remember. There's a mental hospital and every weekend the patients are allowed to go home and visit their families if they are able to properly answer a question by the gate steward at the gate. One day, a man approaches the gate steward with a carrot on a piece of string. ""Morning Harvey, are you ready to go home? Just gotta answer one question"". Harvey dangles his carrot on the piece of string happily: ""Ask away."" ""What have you got there in your hand?"" Harvey ho…