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

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

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