Pronounced "Elmo" (like the red puppet), an Lmo is a girl that is extremely hot but has 0 ass. The assumption is that the girl at one point early in her life laughed so hard that she laughed her ass off. In addition, the word is derived from the common term "Lmao" butt the "a" for ass is removed because the girl did indeed laugh her ass off.
Tristan: Man that girl is beautiful but has no ass.
Dexter: Yeah she's an lmo.
by mrbdec33 June 11, 2015
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"lmao" without the left hand. Said "Laugh My Off" which doesn't make sense but it's not like anything ever does when typing with one hand.
"but yes It is a waste of my time because I don't normally wear panties

me: lmo"
by mbman July 24, 2011
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Somewhat like lmao but more ironic. Often spammed in chains by various people on discord servers.
Originally created as a typo of lmao, where shift was pressed instead of A, hence the capital O.
Person 1: *says/posts something ironically funny*
Person 2: lmO
Person 3: lmO
Person 4: lmO
*lmO spam continues*
by connorp04 July 22, 2018
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'lmo' is just a shorter and easier to write version of 'lmao': laughing my ass off.
It is preferable over its extended version due to the fact that 'l','m' and 'o' are present near each other and can be typed with one hand only. 'a', however, is quite far and would require your other hand too, which might not be free.
Smart work, not hard work
NPC1: *joke*
non-NPC: lmo
NPC1: shouldn it be lmao ?
non-NPC: nah, lmo is better
by loluzaka August 30, 2023
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Leave Me Alone.. its a fairly new internet phrase that people commonly say after flaming someone on a forum
Forum Poster: U suck hard at life lol so lmo noob.
by UrbanSafariGuide October 9, 2006
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Lmo is short for lmao, which is short for laughing my ass of. By cutting the ass out you get a better expression for your laughter. Lmo can be used in a similar way as lol.
Markus: *funnymeme.mp3*
Henrik: Lmo
by Finnapullupskrt May 6, 2019
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Left me on seen

Follow me on ig - Therealrhianna._
Like if somebody say “ why u lmos” why u open they messages and not reply . U left them on seen 😂
by Ree slangs . July 22, 2020
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