What do you need to play this game?
As many beds as the people playing.
How do you play?
Everyone starts by going to sleep in their own bed. The first one who has a nightmare, or wets the bed, gets up and moves into someone else's bed.
That somebody else is then forced to get up and find a cozier pad. A chain reaction has started.
You must play in the dark and keep going till the first lights of dawn. You get the best results following a particularly difficult day, and before a day packed with meetings.
The winner is the first person to wet their bed, of course.