Plusterbating 

Deficating in one's hand and using it as lubrication to pleasure the male member.

I walked in on my father plusterbating, and the thought and physcial smell of it all made me vomit all over the bathroom.

Plusterbating by hoagy chef October 20, 2010

plasterbating 

The act of masturbating after a night (or day) of severe drinking.

dude a: Got so wasted last night, went back to my place, got to plasterbating promptly.

dude b: Did your girlfriend watch again?

plasterbating by hammerbeard September 13, 2011

Plubsterbating

The act of shitting in ones hand, and then using said shit as lubrication for the act of masturbating.

"Oh shit I ran out of lube, what should I do?"
"Just practice the art of plubsterbating!"

Plubsterbating by Rodney Beuford March 20, 2010

plastergating 

Masturbating and/or ejaculation where the semen sticks and plasters itself to the walls, carpets, drapes, etc.

"Eesh, your plastergating got on the walls and ruined my Turkish drapes!"

plastergating by Slanginfoguy June 15, 2021

posterbating 

Writing a message on social media, then deleting the message before posting online.

"I keep posterbating my responses to Trump's bullshit tweets."

"I had to stop myself from shitposting by posterbating."

"Quit posterbating your life away!"

posterbating by EbonZEN December 10, 2017