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A word used by the chronically ill and/or invisible illness community to refer to people who are diagnosed with a mast cell disorder - generally either Mast Cell Activation Syndrome (MCAS) or mastocytosis. "Mastie" is a cute name to refer to the person diagnosed with the condition. It's shortened for easier usage.
"You have MCAS too? Wow, I've never met another mastie before!"
Mastie by VocalContributer October 7, 2019
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Noun. The act of male masturbation; a jerk-off. Generally used within the phrase "have a mastie" or "having a mastie"
After he realized that he wasn't going to get laid that night, he decided to have a mastie and go to sleep.
mastie by Ms. Robinson August 27, 2006
A person who has a mast cell disorder
"Hi fellow mastie!"
Mastie by cheddarcheese101 December 15, 2016

group mastie 

to masturbate in a group, usualy in a circle around a table.
"lets go to Hayden + Asias for a group mastie"
group mastie by Sandra February 26, 2004

Master of deception 

on-point description of junior Grimes

What Junior Grimes is, (old J)

For none even close than mistah J at deceiving and he’s VERY GOOD at it since he’s able to blend in and stand out simultaneously. J is the master of deception after all, he could be your friend and your worst enemy altogether and you’d never even know nor suspect it
J is the master of deception, anyone who claims otherwise or to be the master of deception is deluded or mistaken

Master of deception is someone who’s able to appear as an ally when in reality is plotting your downfall and to overthrow order and your entirety

___

Junior IS the master of deception

Zhut Master 

One of the sweetest members of society who is often getting high and smoking in his house, turning it into a hot box..
"See that guy over there?"
"Yeah?"
"That's Zhut Master T****"
Zhut Master by Zhut Zhut March 21, 2017

Master Ricky 

The sexiest, hottest, most attractive, most intelligent, and most brilliant living being of all time. He is everyone's Master.
Look at how sexy and hot Master Ricky is!
Master Ricky by JTS2 June 8, 2019
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After we broke up, he was floxi to me.
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