Three men are tired after travelling all day and check into a hotel. When they get to reception, they find out they have to walk 75 flights of stairs to get to their room because the elevator is out of order.
The first man suggests they do something interesting to pass time while they walk the 75 flights. He will tell jokes, the second man will sing songs, and the third man will tell sad stories.
So the first man tells jokes for 25 flights, the second man sings songs for 25 flights and the third man tells sad stories for 24 flights.
When they reach the 75th floor, the third man pauses before he tells his saddest story of all, “Guys, I left our room key at reception.”