mastelo 

Whitty bitch

Hey have you met Jose

Yeah isn’t he a mastelo

mastelo by Rittywittymittysticky May 11, 2018

Mastylock 

When ones main hand becomes stiff and starts to twitch out of control. Chronic masturbation is the leading cause of this common teenage male disease.

Symptoms:
Sudden urge to relieve one self
Bulging fore-arm muscle, with inverse proportion to the opposite fore-arm.

If one finds another person/persons with "Mastylock", it is highly recommended to stand back and then state clearly who currently has it and what it is.

Warning: Staring at someones "Mastylock" can sometimes cause the looker to catch "Mastylock", depending on ones sexuality.

"Oh my god Kieran has Mastylock! Its when someone masturbates so much thier hand locks up!"

Jac is a faggot.

Mastylock by bob schumacer April 2, 2011

Masterofallseals 

Also known as Sealy, seals, and sealz

A Roblox user that is known for purchasing the most amount of in game currency on the platform.
Also known for flexing on most users with his well known dominus praefectus with fiery horns combination.

Wow MasterOfAllSeals is really rich!

Masterofallseals by RobloxLeaderboards September 6, 2019

matelot 

The name given to Royal navy sailors (Non Officer ranks). More often used around cities with naval bases.

See him over there?

He is a matelot, in the Royal navy.

matelot by Leon1 October 2, 2006

MasterOfOMGs 

A versatile word, generally used to describe the following:

1. Master of all things kink related.

2. A total Bad Ass who is extraordinarily well endowed.

3. Super-humanly good in bed.

4. The direct cause of semi-permanent ear damage known as CSE (Cock Sucker Ear). Often associated with the vigorous assault of a female throat by a colossal sized penis during an aggressive act of throat fucking.

Also related to "Swallow it again!!"

When entering the BDSM community, a neophyte should always seek out a MasterOfOMGs for the ultimate experience.

"Girl, His junk was so BIG, I didn't know if I could handle a MasterOfOMGs like that!"

"Gary is a total MasterOfOMGs"

I went to the doctor and they said I have a MasterOfOMGs related case of CSE. Hope it heals one day... Good thing I have another ear!

MasterOfOMGs by lyla_SM July 27, 2010

mantelope 

A young man that gets stalked by a cougar. (or possibly a gay manther.)

Guy 1: "Hey, that hat cougar is totally checking you out."
Guy 2: "No way. What do I look like, a mantelope?"

mantelope by Wyatt Slurp September 4, 2009

Masterous 

To be the master of masters, or become the best you can be at something.

Dang, his dance moves are so masterous.

Masterous by Halios October 26, 2010