Nice melted chocolate covered candy treat with peanuts or plain. Comes in different colors as like blue,green,red ect; Used to eat; or to be eaten off of a person; or nice treat to have when hungry.
Those M&M's were quite a treat
That M&M was good off of you Martinez..
by Racheal Collins December 25, 2005
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Abbreviation for mutual masterbation. The act of two people manually masterbating each other to climax.
"Did you snack dings last night?"

"Naw, we just M & M d' on each other."
by quintessential saget August 1, 2013
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A phrase from Unreal Tournament and Unreal Tournament 2004 used as an award for getting 6 kills in a short amount of time. The effects in the sound are the letter M skipping 3 times (hence M-M-M-) and the word Kill echoing three times.

Awards preceding Monster Kill are Double Kill, Multi Kill, Mega Kill and ULTRA KILL, with LUDACRIS KILL! and H O L Y S H I T! coming after Monster Kill.
UT Announcer: Double ki- Multi kill! Mega KillULTRA KILL!!! M-M-M-MONSTER KILL!

(note: the reason multi kill and mega kill are shortened is that usually the player is getting kills so quickly that there is not enough time for the announcer to utter the entire phrase and it is cut off, replaced by the next award sound. The ULTRA KILL phrase is also commonly completely replaced by the announcement of Killing Spree, when the player scores 5 kills without dying.)
by Reginald Maulding November 16, 2006
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1: Choclate candy.

2: Valium. Any member of the Benzo strand. Pills. (slang)
1: Mom, Can I have some M&M's?

2: Hey Dude, You got any M&M's for sale? (slang)
by Jerry S. October 7, 2006
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gay (short for male & male).
Let's get out of this sausage fest, it's totally M&M in here.
by Nick D April 1, 2003
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Someone who is over weight or fat and appears to be circular like a m&m chocolate candy.
Person 1: Ava is so fat
Person 2: Yeah, she’s a m&m
by B cef June 19, 2019
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A multi colered candy that melts in your mouth, not your hand.
I asked Katherine if i could have a M & M and she said no.
by mothafuka November 22, 2005
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