Pushterbate 

Have an orgasm by pushing the penis against a relatively hard surface.

My mom burst into my room without knocking,just when I was starting to pushterbate.

Pushterbate by DIablo May 9, 2014

pissterbate 

When you piss and masturbate at the same time. Can be done by both genders.

Guy 1:"Dude I walked in on Shelby in the bathroom yesterday and she was pissterbating!"

Guy 2:"Yeah I pissterbate all the time."

pissterbate by Lady Woman Girl December 30, 2013

Pisherbate

Aka the one stop shot. To piss, shit, and masterbate in one sitting. Flushing encouraged but not required. The pisherbate.

“Bro that pisherbate got me fucked up”
“I need a bottle of water after that pisherbate, running low on fluids”

Pisherbate by Arodgers2000 November 3, 2019

posterbate 

To sequentially post in a message board forum by oneself.

Many users of RD like to posterbate in the Games forum.

posterbate by lauracs June 13, 2008

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