Masterbay 

Someone with a massive schlong who cant control it.

"He doesn't know da way he's Masterbay"

Masterbay by Giantzombie August 22, 2023

Maskerbating 

Wearing a mask while completely alone

Before I even realized it, I was maskerbating in my car yesterday!

Maskerbating by Photoist July 28, 2020

Masturbaywatch 

To watch the American lifeguard-inspired drama 'Baywatch' for the sole aim of masturbation

'So I was having a masturbaywatch to Pamela Anderson last night when, on the vinegar strokes, the camera panned to David Hasselhoff. As I understand, this now means that I must be a raging homosexual. Do you know where I can catch a matinee of 'Mamma Mia' and follow it up with some good old-fashioned sodomy so as to assimilate effectively with my newfound kin?'

Masturbaywatch by Anonymous submissions December 10, 2016

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

Masterbathon 

a masterbathon is a day that you stay home from school "sick" so you can beat off so many times that you are dry and chaffed and can't walk so the next day you have to stay home and do it all over again

Mike: "Damn jimmy has been out of school all week"
Steve: "I konw he must be having a masterbathon"

Masterbathon by LifeguardSteve April 27, 2004

Masterbeast 

To masterbeast is:

1) To play alone in a multiplayer game by yourself because your friends don't want to play with you.

or

2) To be a badass when the rest of your team is down and out.

1) Yesterday I was masterbeasting because you guys didn't want to play with me.

2) Damn all you fools suck, I had to masterbeast for us to get through the last round.

Masterbeast by THE ON3 November 2, 2011

masterbask 

When no one will give you the gratification of a job well done, you are forced to masterbask in your own accomplishment.

No one would give me the credit I deserved for a great project at work, so I was forced to shut the door to my office and masterbask.

I had just finished painting the bathroom and showed my wife, she said "fine" but you have more work to do. I needed to masterbask in my accomplishment. Then I felt better.

masterbask by rpcgal October 12, 2010