spitesterbating 

the act of masturbating to spite someone.

Jim made nancy extremely angry, so instead of having sex with him, she began spitesterbating to make him feel the enormity of his loss.

spitesterbating by Dyzlan_santonio March 15, 2008

Shatsturbating 

The act of pooping, whilst, simultaneously, masturbating. This act is best accomplished on a toilet, or toilet-esque surface.

"I ate a lot of beans, and then I shatsturbated!"

Larry: "Wow, Turner, what's that smell coming from the bathroom? It smells of quando and poopy."
Turner: "Don't blame a brothah for shatsturbating. It's natchrill."

Shatsturbating by Jason Brown Bear January 13, 2008

shitterbating 

masterbating whilst taking a shit.

Wow, Mr. Tamositis has been in there a while, I bet he's shitterbating again . . .

shitterbating by henrydinhofer October 18, 2010

Shitsturbating 

When you're jerking off on the toilet before a shower but flush it before you get in the shower so your family thinks you were shitting

Yesterday I was shitsturbating but I forgot to flush... Now my family totally knows I was wacking it.

Shitsturbating by Shitsturbator69 December 10, 2018

Shitsterbation 

Act of shitting in your hand and beating your dick with your shit

Jack took a massive shit and used his shit to shitsterbation

Shitsterbation by Pussytoass June 20, 2021