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To pleasure the anal cavity of oneself with the intent of sexual gratification.
I really wanted to go down on her last night, but when I got home she was in the middle of an assturbation session to the new Justin Timberlake video.
by decamel August 28, 2013
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Jun 5 Word of the Day
portraying police in a positive or helpful light, when in reality they are the violent fascist tools of an authoritarian military state
β€œThat show is all copaganda. No such thing as a good cop.”
by venediction May 27, 2020
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2
Masturbation focused on pleasuring the butt, whether it be by massage or insertion.
Wow, this banana is frozen rock solid. I'm gonna have a good assturbation session tonight!
by Twiggins Q. Neugebauer June 20, 2011
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3
Masturbation restricted to the ass region. Usually performed by placing dildos, buttplugs, fingers, toothbrushes, or whatever else may be handy into the anal cavity. Lube is optional but highly recommended.
Suzy had never considered assturbation until she overheard Julie talking to Maria about shoving a 9 inch vibrator up her ass while fantasizing about Tom (Suzys dad).
by mindrape November 15, 2005
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4
Taking a shit while browsing porn that you will then proceed to masturbate to.
Perry: How was your day yesterday?
Gavin: Great, I had a real nice assturbation session.
by RobotLunchbox December 08, 2016
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