It is a simple hid and go seek game played in the pool. The theory is that everyone has to stay in the pool. One person is it, with his eyes closed yells “Marco”, everyone else yells “polo”. The peron who is it then swims to the nearest person, eyes closed and tags a person.
MisngNOLA:
ROFL. Ok now I need to clean off my computer screen from the water I just sprayed onto it.