Top Definition
A person that shits out a sphere shaped poo that makes you cry like an onion
'holy shit that is an ass onion you left there'
by furiouswank April 26, 2007
when attempting to penerate the anus of a lady friend or brokeback buddy, it is the crusty poo flakes that surround the enterance to said anus. As you thrust harder and harder past the many layers of the crusty poo flakes, they will cause a great discomfort that often results in an embarassing yelp, followed by a stream of tears.
Brad: oh man, last night i only got through half of Debra's ass onions before i had to pull out and wipe my tears in the bathroom.
by Dr. Richard Monroe March 27, 2007
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