A man phones a mental hospital and asks the receptionist...
A man phones a mental hospital and asks the receptionist if there is anybody in room 27. She goes and checks, and comesback to the phone, telling him No, the room is empty. "Good," says the man. "That means I must have really escaped."

A site foreman had ten very lazy men working for him...
A site foreman had ten very lazy men working for him, so one day he decided to trick them into doing some work for a change."I've got a really easy job today for the laziest one among you," he announced. "Will the laziest man please put his hand up."Nine hands went up."Why didn't you put your hand up?" he asked the tenth man."Too much trouble," came the reply.