A mysterious entity that is both unseen and unheard, but throws parties in your pool when you are away.
Most often strikes high income, childless couples.

Most often just the neighbor kids hopping your fence.
Wife: Honey, did you leave the floaties in the pool? And did you leave all those red cups around?
Husband: No, the pool was clean before we left.
Wife: Damn, looks like that pooltergeist is back.
by SwedeSpeed August 18, 2012
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