Top Definition
The act of shitting twice in one day.
Person 1: that happens once in a brown moon.

Person 2: Dude you must shit a ton!
by Young bookie July 25, 2013
when the guy is having anal sex and she hasn't cleaned her ass and he starts scooping it out with his dick and makes her eat the brown moon like blue moon ice cream
The girl ate the brown moon.
by Jenny Frank October 20, 2009
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