m&m 

short for, Ad hominem.

He threw the m&m's first.

m&m by Seducier April 20, 2018

M&M 

When you get lit as fuck off Meth and Morphine, and you start puking, but get even higher after puking.

"Bro I got M&M'd the fuck up last night."

"You should so try doing M&M, it's fun."

M&M by daddy's bad little bitch August 16, 2018

M&M 

M&M Gaming
Short for Mac and Mobile, people who identify as Mac and Mobile gamers are truly the future of competitive eSport gaming, the pinnacle of play.

I cannot afford a console, so I M&M game.

M&M by Jakhammer_1 December 30, 2018

m&m 

meth and money.

dudebro #1: dude, where's karen?

dudebro #2: i don't know, probably out sucking dick for some m&m's.

m&m by ohhellotheremrs May 12, 2019

m&m 

someone who is a memory & mistake ( deep down you still love em doe )

bro that bitch you I dated was a m&m

m&m by killer3ghee July 14, 2019

M&M 

When someone from the burbs goes to the ghetto and acts hard and like they know what it's like to live there but the other people know that this person is a fake

This M&M went to the ghetto last night acting all hard and shit and got his ass kicked

M&M by SpasticSarcastic November 8, 2019

M&M 

Mistakes and memories

My ex is a m&m (mistakes and memories)

M&M by GoonGary✍ November 14, 2019