Short for "Life Must Suck". If someone posts LMS on their facebook, you should feel extremely bad for them because their life sucks and they are desperate for attention.
Retard: LMS if you think Justin Beiber is cool!!! =D
Normal person: You poor, poor thing.
by ducky59 June 15, 2012
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Short for "Lick My Sack," or "Lick My Swag" for a more gender neutral equivalent. More often than not, this is not referring to the actual act of fellating, but rather to virtually fellating someone. A Facebook friend might request that you lick their swag, thus bringing their e-penis to a more erect and noticeable standing. The result of complying with an LMS request is generally the expulsion of a wad of volatile links to things that the recipient thinks are interesting, as well encouraging more future requests. It is generally used by those who are desperate for attention (see attention whore), real or imagined.
"Dude, the other night I was on facebook and there were a bunch of people who told me to LMS."

"Did you do it?"

"Nah, there were so many I would have chaffed my tongue."
by Brain_Bleach January 25, 2012
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Little man syndrome - Something small people possess. Mad at the world because of their short height.
My boss has a bad case of LMS!
by Therickman May 22, 2005
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An accronym for "Lose My Shit."
The "shit" mostly pertains to phone numbers, fax numbers, e-mail addresses, facebook friendship, and any unique means of communication.
Greg: Hey Allan, want to go to KPacho later for a cold one?
Allan: I'd rather drink piss mixed with raw sewage.
Greg: Aright my dude, LMS.
by RealBozoTalk February 22, 2013
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LMS is an acronym for Last Man Standing, which is the name of an xbox live gaming clan established on December 10th 2010.
lmsclan lmsgamers lms clan
by DILLIGAFxxCINC May 5, 2013
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LMS is a term used on Habbo Hotel in casinos which means, last man standing. The aim is to be online in the casino for X hours to win the prize.
by DrewIshLee February 12, 2013
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