The ancient Mesopotamian sex act in which a small forest-dwelling mammal is placed into the anus of your wife and left there for 8 days and 8 nights until the ultimate assgasm is achieved.
Guy 1: Dude where were you last night? I told you I was having people over to watch season 2 of the O.C.
Guy 2: Yeah my bad bro. I went over to that slut Monica's house and we totally hooked up. She told me I gave her the best assgasm she's had since she last got fanny weaseled in '94.
Guy 1: Word.
Guy 2: Yeah my bad bro. I went over to that slut Monica's house and we totally hooked up. She told me I gave her the best assgasm she's had since she last got fanny weaseled in '94.
Guy 1: Word.
by Squamal Bear January 12, 2009
Get the fanny weasel mug.A guy who for reasons unknown to mankind manages to worm his way inside the vaginas of fit girls, despite a complete lack of any attractive qualities.
by bastante March 10, 2013
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