Top Definition
A task that requires you and a partner to successful polish off a handle of any liquor through the duration of the night while not sharing any with non-competitors.
Roomate #1 :"How did you destroy the house this bad, it was just you and that one guy here last night ?"

Roomate #2 :"Half Gal Challenge Bro"
Roomate #1: "I understand"
by Barbarosa4Life1990 November 07, 2011
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