SENG, Beng, and Heng were at a convention together and were sharing a large suite at the top of a 75-storey skyscraper.
After a long day of meetings, they were shocked to hear that the lifts in the hotel had broken down and they would have to climb 75 flights of stairs to get to their room.
Seng said to Beng and Heng: 'Let's break the monotony of this unpleasant task by concentrating on something interesting.
'I'll tell jokes for 25 flights, and Beng can sing songs for 25 flights, and Heng can tell sad stories the rest of the way.'
At the 26th floor, Seng stopped telling jokes and Beng began to sing.
At the 51st floor, Beng stopped singing and Heng began to tell sad stories.
'I will tell my saddest story first,' he said.
'I left the room key in the car!'