McMatics 

someone who is knowlegable enough of the McDonalds menu that they can perform complex, on the spot, calculations giving exact totals before the cashier.

Mcdonalds worker: "hi, what can i get for you today?"

Matt: "can i get a McChicken and a Big Mac Combo, supersized and 2 double cheeseburgers on the side with a small fry"

Dan: "dude, it's gonna be $16.78"

Mcdonalds worker: "that'll be $16.78 please drive up to the first window."

Matt: "holy fuck tits!"

Dan: "i know man, it's the McMatics!"

McMatics by angesuko March 25, 2010

Mucatate 

When ur about to Lactate but instead u MUCATATE. Mucatation is the act and process of the body producing mucus. Can be through ur nostrils, but also prevlent from ur nipples
Nipple mucus

The frogs glands began to mucatate.
The medication causes severe mucatation.

Mucatate by Cam456p April 2, 2019

Mmcht

Originated from @AllaboutNahdia, the sound you make when smacking your teeth

*Mmcht* said Tyler as he watched the news

Mmcht by soccer mama zee February 18, 2019

Mcatting 

To prepare oneself for the medical school admission test (the MCAT) by secluding oneself and studying a great deal.

Dude, I'm totally mcatting it up today

Mcatting by Pwnsyoda June 24, 2011

Mmateri

A large Canadian walrus, usually smelling of skunky LaBatt Blue and feces

Holy Shit! Did you see that Mmateri?!?!? That thing was HUGE!

Mmateri by sailirish7 January 16, 2010

mcat 

The Medical College Admission Test. An 8-hour marathon of an exam required of all prospective medical school applicants. Believe me, it sucks ASS!

You're taking the MCAT in April? Oh, my condolences.

mcat by Anonymous March 8, 2003

mecate 

Literally means rope, yet in some parts of Mexico City like Neza, Mecate is slang for Hillbilly.

Chico Ranchero, "Que Paso Primo?"
Jose Gacho, "No Mames Mecate"
or
Look at your Cowboy hat.... Eres Mecate Guey.

mecate by Jose Gavacho December 16, 2010