Reddit/Internet slang stands for: Hold My (Cosmo)politan. This is the female equivalent to HMB-Hold My Beer.

These are the last words before someone does something awesome or gets injured. Not actually said by person but as a comment to a video or gif.
HMC I've got a race to win in heels. HMC(only the acronym in title and it's a video of a drunk women's shenanigans )
by C J breezeway July 28, 2019
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Person one to person two who are both watching a street fighting friend HMC while I help a friend out
by UnSpamMe August 7, 2019
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Originating from random mathletes bored during the otherwise dull math meets which they attended, the phrase "HMC" is an abbreviation for "Hot Math Chick." Mathletes have been known to use the acronym sarcastically or more rarely seriously.
Man, check out the size of the polynomials on that HMC!
by Tang April 19, 2005
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AIM , Facebook , Twitter etc. acronym for : hit my cell
by randymaurice July 8, 2010
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Kinley-“drew get in the back seat

Drew-“HMC
by DrizzlemyNizzlefoshizzle December 27, 2017
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HMCS. Fuckuerd: The HMCS Fuckurd was a cargo steamer built by the Royal British Shipbuilding Company of London England. She was the thirteenth ship of the WWI fleet built and was launched in 1919. She is the sister ship of the Kinmountia.

Tragically, on April 20th, 1920, at 16:20 the Fuckurd collided with another ship, the "Spirit of Ireland"and "shattered as if a bottle of whiskey was smashed ." She sank in under a minute and took 69 of her seamen down with her.
Fuckuer' d the HMCS. Fuckurd
by Harry M.F. Pirate October 1, 2016
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