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A hole located in the backside of the boxers of an individual who puts his/her boxers on backwards
*group enters hot tub*

Friend 1: "Look at this clown! He put his boxers on backwards!"
Friend 2: "Would'ya look at that! I've got an ass flap!"
by OTJdog March 26, 2017
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Jan 27 Word of the Day
Referring to the heavy unfashionable winter jacket and patterned mittens Sanders wore to the inauguration of Joe Biden.
Its brutally cold outside this morning so be sure you're Bundled Like Bernie!
by Talk2me-JCH January 24, 2021
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2
When a rogue bit of toilet roll gets stuck to your sphincter during wiping.
It was a textbook turd until I snagged an ass flap.
by TedZeppelin March 02, 2007
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3
an extraneous piece of skin or webbing that covers the anus
Before we had the sex, I had to lift up her assflap.
by Gooney Goo Goo April 09, 2003
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4
the slit in the seat of a pair of longjohns or union suit
"john forgot ta open the assflap and shat all oner hiz longjohns"
by hemp March 11, 2005
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5
1. the small growth of skin that occassionally covers the anus of newborn children. Such growth is customarily removed and discarded. 2. someone who is disgustingly useless.
"Get off the couch and take out the garbage you ass flap!"
by 1911a1 July 06, 2006
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6
A tag of skin on the anus sometimes left behind by a resolved ass-grape.
Her ass-flap was a sign that she was predisposed to ass-grapes, but I sodomized her anyway.
by UberCyberBeast July 10, 2008
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