Top Definition
A game originating with baby sitters in the north east in which fruit loops or similar O shaped cereal is poured into a toilet and young boys are instructed to aim for certain colors. An alternate method of toilet training.
"Aim for the red one Derek! Good job! You won Piss-o's today! Wait untill I tell your mom when she gets back from Italy."
by Savannah Jewels June 29, 2006

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