Angsturbation. 

A masturbation session that follows an episode of angst.

Dude one: "Oh man, just had a huge fight with my girlfriend."
Dude two: "You know what'll relieve that?"
Dude one: "What, man?"
Dude two: "Some good old angsturbation."

Other examples: I can't believe that douchebag fired me. That's gonna make for some good angsturbation.

Angsturbation. by pumpkin soup February 5, 2015

assturbation 

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.

assturbation by decamel August 28, 2013

Assturbation 

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!

Assturbation by Twiggins Q. Neugebauer June 20, 2011

assturbation 

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).

assturbation by mindrape November 16, 2005

gangsturbation 

The act of masturbating in a group, such as in a circle jerk or in a game of limp biscuit.

When Timmy dropped his pants along with his friends for a round of circle jerk gangsturbation, they laughed out loud at how small his manliness was.

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Mark H. Proud Urban Dictionary Slang Author since February 2004.

gangsturbation by Mark H November 11, 2005

amsturbation 

travelling to amsterdam, hoping to get laid, but unfortunate circumstances forcing you to wank instead.

i hope i won't have to do amsturbation this weekend.

amsturbation by chicken adventurous May 9, 2006

Hangsturbation 

The excitation of one's own genital organs while simultaneously asphyxiating oneself usually to the point of orgasm.

Late at night, Officer Billy loves hangsturbating in his cop vehicle while checking for drivers going over the speed limit.

Hangsturbation by Dr. Dorifto August 31, 2005