Playing with your own bunghole strictly for pleasure and personal gain.
Johnny was in the bathroom for hours on end , assturbating until the gentle sunrise caressed the horizon.
by stxnthamix August 29, 2015
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To use a butt to masturbate one's penis.
I never care about the face or the body. I just grab the hips and use that ass to assturbate my cock.
by Fkrtist September 4, 2013
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Jack: Dude, I so got laid last night!

Jim: What happened?

Jack: Well, I was at a party, and I walked into a room and I caught Lisa assturbating. So I asked her if I could join and we totally got it on!
by Vinchenzonaughti March 4, 2008
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1. to clean the inside of your ass, usually before mooning, i.e. checing for toilet paper, etc
2. to play with your ass, like masturbating, but with anal sex
3. to touch the inside of someone else's ass
1. "dude, assturbate before you moon them, you dont know whats in there."
2. "you shouldn't assturbate, it maks the inside of your ass all itchy!"
3. "she groaned loudly as I assturbated her"
by baruchuh November 2, 2006
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Its where the male figure fingers his butt hole in an erotic manner until spooky white juice erects from his peepee hole.
Leland was exquisitely assturbating while watching brittney spears's new music video!
by b to the r a d March 7, 2009
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