Acronym for My Chemical Romance, easily one of the most influential bands of the 21st Century. Probably most Famous for their 2006 Concept Album, The Black Parade.
Me: You Know MCR, Right?
Emo: *Screeching* WHEN I WAS, A YOUNG BOY, MY FATHER, TOOK ME INTO THE CITY
Me: OoooKay then.
by MC35 Definitons October 22, 2019
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Stands for My Chemical Romance. A kickass pop-punk and emo band that people used to mock constantly for being overly edgy and melodramatic. Nowadays, they get the much needed respect they deserve. Three Cheers For Sweet Revenge and The Black Parade are essential albums.
2006
Guy 1: What bands do you like?
Guy 2: Radiohead , The Smiths , MCR
Guy 1: Wow, you like MCR? Fuckin Fag

2020
Guy 1: What bands do you like?
Guy 2: Radiohead , The Smiths , MCR
Guy 1: Wow, you like MCR too? They're Awesome !
by Nuts N. Bolts January 26, 2020
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I put entered my codes in on MCR and I got a hat!
by Petey Mik October 10, 2007
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Some recent band that is an "acquired taste", apparently. If you say anything bad about it, do not worship the raccoon that Gerard Way is, or in any way practice your right to free speech by expressing your dislike of this band, leagues upon leagues of preteens and lonely high school students will be on you and will either verbally assault you or abuse caps and misspell every other word to express how emotional they are about their love of this band and if you don't like them, then you're a "st00pid faggot who's never herd them so shutup st00pid prep"
Emo: XOMG IT'S MCR, HEY HEY LOOK IT'S MCR GERARD WAY'S SOOO HOT HE'S MY BOYFRIEND.
Random Person:... he looks like a raccoon. I don't care for them.
Emo: OMG HATER PREP FAGGOT YOU DONT KNOW REAL MUSIC
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Manufacturing Change Request.
What Manufacturing Engineers submit to the design authority to try to get the method of manufacture, or source of a component changed.
We submitted an MCR to whingeenering, but they bounced it.
by fubarderby January 25, 2005
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Mouth To Cock Resuscitation
by anonymous May 5, 2003
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MCR stands for My Chemical Romance. They're a pop-rock band that plays a butchered style of emo, who are repetitive and sing about the same old crap. They play a style of music that takes no real talent whatsoever and sing songs about things that don't matter.
Hot topic emo: Hey, you wanna go listen to some emo?
Me: Sure, what bands?
Hot topic emo: MCR, Taking Back Sunday, etc
Me: That isn't emo.
Me: Rites of Spring and Fugazi are emo.
by crustfan April 9, 2007
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