Masterbrake 

Taking a quick 5-10 minute brake from an online game for the sole purpose of masturbation

dude after this raid I have to take a masterbrake

Masterbrake by M.C. Hamper November 14, 2011

Masturbaker's dozen 

The pinnacle of all dedicated feckless cum-shedders whereby the participant aims to ejaculate more than 13 times in a 24 hour period. 13 loads in generally accepted by industry insiders as being the level that separates the men from the boys.

'I did it , I did the masturbaker's dozen! Admittedly the last six were with a floppy and the jizz was purely gaseous, but by golly I finally did it. Now it's off to the doctor for me to get some ointment for the blisters and tennis elbow..'

Masturbaker's dozen by Anonymous submissions December 10, 2016

Masturbreaker

A person for whom masturbation is so vigorous an activity that, in the process of self-pleasuring nearby objects become broken or damaged.

My old roommate was a masturbreaker. His room always looked like there had just been an earthquake.

Masturbreaker by D.S. Credito March 9, 2015

mastercaker

when a boy masterbates with a cake
-when he sticks his penis in a cake and humps

the baker is a mastercaker

mastercaker by my-peroid-is-near June 29, 2014

masterbate 

To masturbate like a master

I masterbated really well yesterday.

masterbate by ‮ekil skool ti tahw t'nsi sihT January 12, 2022

Masterbaterium 

A room build or allocated for the sole purpose of spanking yer love hose, wanking in general or having a wankparty. Usually painted an off yellow colour and containing a sink and towels.

I will be back in a moment Im just going to polish my bishop in the Masterbaterium. Good boy, make sure you use the wanklock on the door.

Masterbaterium by DrLoveNuts July 25, 2007

Masterblader 

Banked track roller derby referee for the Lonestar Rollergirls from the A&E reality series called "Rollergirls". Known for his fight yell before each jam " Are you ready? Pack 'em up!!"

The Masterblader whistled twice to signal the jammers to start twenty feet behind the pack.

Masterblader by Motorblade June 16, 2007