Masturbation guilt 

The sense of guilt you feel post-masturbation when you realized what you have just jerked yourself off to.

"Oh God, what have I done? I did not just masturbate to bestiality.. talk about masturbation guilt.

Masturbation guilt by GunaDK January 19, 2012

Masterbassion 

(n.);masterbassing-(v.) pronounced: Mast-er-bash-un
The stimulation of ones own bass guitar, especially slapping, which results in immediate pleasure and self-gratification. Depending on the length and intensity of masterbassion, pain and/or blisters may develop.

Idle hands lead to masterbassion.

Masterbassion by Glason j Laausser March 26, 2010

Public Masturbation 

The reason I am no longer allowed on public transportation.

I definitely should not have participated in Public masturbation on that subway.

Public Masturbation by thepseudonymousbosch February 21, 2017

Masturbation Marathon 

An exceptionally long episode of masturbation fits. These episodes are usually brought on by sexual deprivation and bordom; however, and I'm not making this up, they have been used a means of fundraising for sexual related causes such as safe sex. A masturbation marathon is a strenuous event that requires disciplined training and preparation. There are several related subcatagories such as time, ejaculation distance, and most orgasms for both male and female competitors (I'm totally serious - google it).

Hillary's return brought an end to Bill's 72 hour masturbation marathon.

Masturbation Marathon by Face_Bones August 29, 2013

Social Media Masturbation 

"Liking" your own post on Facebook or retweeting your own tweet on Twitter

"I look so awesome today" - Liking this comment with a thumbs up beneath it on Facebook or retweeting comment on Twitter is Social Media Masturbation.

Social Media Masturbation by Mistress Weber April 16, 2011

Masturbation hibernation 

To take a break, "hibernate", from the act of pleasuring one's self.

John's dick was getting so burned and chafed from all the wanking that he had to take a masturbation hibernation.

Masturbation hibernation by Darkhg November 28, 2009

masturbation rolodex 

All of the people you would like to have (and/or have had)
sex with, any of which can be selected to fantasize about while masturbating.

I picked Maria from the masturbation rolodex last night

masturbation rolodex by Woody Thomas July 21, 2008