Popsterbation 

The act of one sitting on a toilet and masturbating con-currently

Popsterbation is amazing

Popsterbation by Alex sb May 12, 2014

poopsterbating

the act of masturbating while defecating simultaneously.

Jill was appalled when she caught her boyfriend poopsterbating in the bathroom.

poopsterbating by Apolloss March 2, 2014

Poopsturbation 

The act of grabbing a crock of shit and using it as lubricant while polishing the rusty handle (aka jacking off). Not for the faint hearted. Widely practiced in Germany.

Jacking off old school is nice and all, but poopsturbation gets me off in seconds!

Poopsturbation by ein Kackspieler November 5, 2010

black opsterbation 

the act of playing combat training, against computer opponents. A "Call of Duty" analogy of masterbation.

Bill: Come join me in a public Team Deathmatch.

Dale: No way, dude. I'm not that good. I'm going to try a little self-pleasure through black opsterbation.

black opsterbation by daBuster September 28, 2011

posturbation 

also: Posturbating

'liking' or 'upping' your own posts.

If you have to like or up your own post, it's posturbation, and you probably should have kept it to yourself anyway.

posturbation by pteryakisan October 30, 2013

pussterbation 

pussterbation - An unnecessary term meaning vaginal masturbation. Portmanteau of pussy and masturbation.

Yesterday my mom asked me if I had discovered the joys of pussterbation.

pussterbation by anklepain9000 July 12, 2010

poopsterbation

when masturbation is done while taking a poop

poopsterbation is always best on a tiolet

poopsterbation by IIWALrUSII April 3, 2011