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Match Making Ratio. It's a hidden skill rating giving to you by Blizzard's complex rating system. You are never allowed to see it, but it determines "Favored, Teams Even, and Unfavored". It also determines league.
My MMR must be huge, I went from Bronze to Diamond in 3 game

My MMR is bigger than my dick, and my dick's bigger than Mount Everest. 2+2=a big dick.
by DeminRamst February 13, 2011
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Feb 23 Word of the Day
The process of searching a building for an empty bathroom. A successful bowl search typically relieves the frustration of uncomftorably defecating around others, although in less frequent cases the desire to urinate alone is a factor. Bowl searching can be done anywhere although it is most prevelant on college campuses.
"In college I did a lot of bowl searching."

"Sam went to the bathroom like 20 minutes ago. Jeez, what's taking so long?"

"He's probably bowl searching."
by A bowl searcher June 06, 2011
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2
Stands for the medical vaccine which prevents measles, mumps, and rubella. "MMR" comes from the first letter of each disease.
Jake received his MMR vaccine as a child.
by cypat25 July 03, 2005
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4
an american high school in canada where preference is given to jocks and snobs

mmr to only date the popular crowd
oh you don't stand a chance with her she so mmr
by billy w. April 07, 2004
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5
An onomatopoeia used in written digital social media (WhatsApp, Discord) to denote a positive emotion or a laugh, both ironically and unironically, trough making a long bilabial nasal sound followed by a voiced dental, alveolar and postalveolar trill to end the sound.
It is mostly used by pro-gamers, people who want to scape from Latin-América and V-tuber fans.

It is elite courtesy to respond with another mmr or only mr in case you are in a hurry
Person 1: I fell down my stairs
Person 2: Did it hurt?
Person 1: No
Person 2: mmr

Person 1: My internet does not work.
Person 2: mmr
Person 1: mr
by mmr Man October 23, 2020
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