A phrase created by 2 University of Waterloo students in 2012.
The phrase refers to the often explosive bowel moments caused by the use of Mass Gainer supplements and used as a code word.

*Note these guys used 8-12 scoops of Mass Gainer a day, however they also trained very intensely and made significant gains. Drinking Mass Gainers without a proper workout regiment will mostly result in many MGMs and belly fat as well.
Example 1

man 1: Where are you going?

man 2: I have to take an MGM

Mass Gainer Moment- (aka MGM)

man 3: WTFs an MGM??

Ex 2.

man 1: Another MGM?

man 2: ya! its my 5th one today...the story of my life...
by adav December 14, 2012
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The movie studio whose movies and cartoons start with a mean lion roaring behind an elegant frame made out of film. MGM is known for their funny-ass cartoons like Tom and Jerry, and other characters like Droopy and Screwy Squirrel.
MGM cartoons are funnier than Disney cartoons.
by Porque Me Buscan May 28, 2019
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Hooking a battery up to a guys genitals could be considered MGM. Hugo Spadafora underwent MGM before being slowly beheaded. MGM remains popular in many countries outside the Western World as a way of making people tell them what you know.
I guess MGM is okay with females, unlike females men are assholes so they deserve to get their genitals mutilated.
by Solid Mantis June 14, 2018
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Multigenerational mixed race.

“ a product of two biracial people or
one biracial and one multiracial person,
etc.”

Saw this on a subreddit so figured I’d share some I never heard of it before
A: My parents were both biracial so I guess that makes me a mutt

B: A better term would be you’re MGM
by Domisuptoolate July 9, 2022
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