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2. assflap
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 Mar 11, 2005 add a video
1. assflap
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 Apr 9, 2003 add a video
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