Crapsturbate 

Masturbate while taking a dump; Fapping and shitting at the same time.

The other day I was so horny that I decided to crapsturbate in the public bathroom.

Crapsturbate by Anonymous Billybob Joe January 15, 2008

Casturbation

Casturbation relates to the art of masturbating whilst wearing a cast (caused from broken bones somewhere between the individuals wrists and shoulders).
It can often require a lot of patience and training depending on the size and location of the cast.

Dan: Must be hard for you, being single for the last 7 months and not even able to choke the chicken with that broken wrist?
Jeff: It was rough for the first month, but casturbation is really my only option

Casturbation by neilsonz January 27, 2009

Crapsturbate 

When you jack off to porn that involves, well, shit.

Ebby: 2 girls 1 cup always makes me crapsturbate.
Me: Well it always makes me throw up.

Crapsturbate by Tikibarberfan July 12, 2010

Catsturbation 

The act of masturbating only to open one's eyes to the judgmental stare of one's cat

Fluffy walked in on me again...So I guess catsturbation is my thing now. I really need to get a girlfriend.

Catsturbation by hightowers April 17, 2011

crysturbate 

Masturbating and crying and the same time.

"Since Jack left all I do is crysturbate."

crysturbate by HaleyDK July 16, 2008

fatsturbate 

When a man is sufficiently obese that his penis can be engulfed in body fat, allowing him to stimulate himself by simple, repeated shifting of body position. This auto-erotic action is fatsturbating.

My obese college roommate would always fatsturbate on the couch next to me, yelling "Check it out! No hands!"

fatsturbate by Stefan Bastardo February 6, 2010

crasturbate 

to masturbate and cry at the same time. Usually performed by male graduate students in the sciences or engineering. Common causes include: no women around, ugliness, poverty, stress, being dumped, etc.

last night I thought of <name> so I crasturbated

crasturbate by Bob Carlyle October 31, 2005