In The Pond
Mark a big circle on the floor. This is the pond. The whole
group stands around the edge. The leader is the referee. When
she shouts "In the Pond," you all jump into the circle. When she
shouts "On the Bank," you all jump out. But... sometimes she
will try and trick you by saying "On the Pond" or "In the Bank."
When she does this, nobody should obey. Anyone who moves, on a
wrong order, is out of the game or may pay a forfeit and get back
in.