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.