2 definitions by DarK_Angel

1
A mythical being who exists to give people wedgies. As with the Tooth Fairy, Santa Claus and the Easter Bunny, the Ass Ninja visits all the little boys and girls in order to bunch their underwear at the worst possible times.
"Dude I totally just got visited by the Ass Ninja! Cover me while I pick my underwear out of my butt."
by DarK_Angel August 25, 2012
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