A childhood game.

Equipment:
One tennis or other bouncy ball.
One wall with no windows.

Gameplay:
Players throw the ball at the wall, and then someone catches it and throws it back at the wall.
Eventually somone will touch the ball with some part of their body but fail to catch it. They then have to run and touch the wall while the other players attempt to hit them with the ball. When they reach the wall they are safe.

Depending on how it is being played, someone who is hit can be out, or they may have 3 "lives" or they may just keep playing.

Butts Up:

Various offenses (agreed on at the beginning of the game) earn the offender a "Butts Up". He must stand facing the wall with his hands on the back of his head. Someone throws the ball at him.

Offenses that get a Butts Up can include:

Throwing the ball and not hitting the wall.
Touching the ball twice without catching it.
Missing when throwing at someone else who is Butts Up<.BR>

Non Violent Version
If you don't want to throw balls at people, you can play Off the Wall where you have to throw the ball at the wall instead of the person, and there are no Butts Ups.