Riddle: A man lived on the 42 level of his appartment building. Every day when he was off to work he would press the botton to go to the lobby and go down. In the afternoon when he would come back he would push the button to go to the 21st level and then he would take the stairs the rest of the way up.
Why did the man do this?
Answer: Because the man was a midget and he couldnt reach the button to go to the 42nd floor.