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1.
Noun: Anything on the human body that comes in pairs, especially parts that make you giggle.
Bar parton 1: I can't believe that guy had the gahoingas to hit on that chick with the large gahoingas.

Bar patron 2: Dude, I am not believing my gahoingas.

NOTE: never used singly, such as "Oy, my gahoinga!"
by Don Tazemi August 01, 2011