A man lives on the 20th floor of a 24 story apartment building. He works an odd shift and when he leaves for work, he takes the elevator all the way to the lobby and gets in a cab.
When he returns home from work he takes the elevator to the 14th floor and takes the stairs for the remainder of his trip home.
The only exception is on rainy days or if the elevator is crowded. On those occasions he takes the elevator all the way to the 20th floor.
With only the above information, can you explain why he does this?
Answer: He is a midget. On rainy days he carries an umbrella which he can use to reach the button for his floor. On nice days he has no umbrella with him and can't reach the button. When the elevator is crowded he can ask someone to press the button for him.