Showsterbate 

To perform the act of masturbation in the shower

At camp, ethan showsterbated which wasn't cool because it was the only open shower.

Showsterbate by Riley Langburt February 18, 2009

Showerbate 

The Act of furious Masturbating during a shower

Damn Showerbating isnt funny anymore

Showerbate by Wilitus July 29, 2005

shasterbate 

shitting while masterbating

person number 1: "oh wow Justin the football player, takes a long time in the bathroom"
person number 2: "hes probably masturbating while he shits"
person number 1: "haha, Justin shasterbates"
person number 2: "hahahaha thats clever. shasterbate!"

shasterbate by shexcelent December 1, 2009

shitsterbate 

to masturbate on the toilet while taking a shit

there are some good porn mags in the bathroom I couldn't resist getting my shitsterbate on just now.

shitsterbate by james___ March 20, 2008

Showerbate 

When one masturbates in the shower

I love to showerbate in cold water

Showerbate by triangle_boy June 24, 2011

Sobsterbate 

To masturbate while wallowing in self-pity.
To masturbate while crying.

Can't get ahold of Mike? His girlfriend just dumped him, I'll bet he's home sobsterbating.

Sobsterbate by Annie July 1, 2005

Showerbater

The act one masturbating in the shower

I caught my horny boyfriend showerbating yesterday that filthy showerbater

Showerbater by Liquidrobot October 27, 2017