7
butt opening on onesie commonly used for easy access
I like to get frisky in my PJ’s so the ass flap is very convenient.
by sluttya$$tay December 31, 2017
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8
A piece of cloth (usually a dark color, most likely black) with a logo or picture of a band on it that hangs over a "punk" persons ass, therefore supposedly showing their undying gratitude for the band. Can also be worn over frontal region, in which it is called a "cock flap", even on females.
1Dude, look at that wannabe punk rocker! He's wearing an ass flap!
2Yeah, and a cock flap too!
1What a tard.
by BentBackTulips August 20, 2007
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