shasturbate 

The act of masturbating while taking a shower. The wetness and steaminess makes it feel amazing, yet it usually takes a little longer to have an orgasm. It is also very efficient in terms of cleaning yourself off afterwards.

Ron: "Bro, I just shasturbated while thinking about Emma Watson!"

Daniel: "Nice, dude, that must have felt awesome! Shasturbation is the best!"

shasturbate by fapfapfap458 November 26, 2011

shasturbate 

To shit and masturbate at the same time.

For christ sake Jacob you've only gone and shasturbated up the wall .

shasturbate by Accidictal June 7, 2016

spamsturbate 

V - to spamsturbate is to masturbate many times consecutively. Occassionally this is to see who can ejaculate the most times in a set period of time.

P1 - Hey I'm going to go spamsturbate.
P2 - I can spamsturbate better than you!

spamsturbate by Kenneth Pinyan November 6, 2007

shasturbate 

When one masturbates using their own shat as lubricant.

I couldn't find the lotion anywhere so I shasturbated!

I was wiping my ass and accidentally got some shit on my hand so I decided to shasturbate.

shasturbate by LeDouche December 9, 2008

seamsturbate 

verb
to provide sexual pleasure by tugging on the crotch seam/zipper of one's or another's pants (especially jeans), resulting in friction against one's or another's "part"

I saw your ex-girlfriend seamsturbate in English class today.

seamsturbate by Kisaki Kattakuzai January 17, 2008

Shamerbate 

When a woman induces feelings of shame and self loathing in a man for masterbating

You wouldn’t be able to shamerbate me if you actually put out

Shamerbate by Madnax22 October 31, 2017