Self-cleaning anus
From Fandom wank wiki
April 6, 2004: One day, a very gay furry named Tigerwolf threw a snit over his fuckbuddy visiting a WOMAN (liek ewwwwwwz!!!), in which he stated that unlike the filthy, smelly vagina, the anus was self-cleaning.
Note: Oddly enough, this wank should not be confused with the self-lubricating special anus.
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