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Lmaoo is an extension of Lmao, which means 'laughing my ass off'. Lmaoo is to be used when one is more entertained than a lmao situation, but not as much as roflmao situation.

Adding more o's adds to how funny one finds the situation.
Person 1: z0mg i r batman
Person 2: na na na na na na BATMAAAN!
Person 3: wtf? lmaoo!
by UK Randomer May 21, 2009
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Apr 13 Word of the Day
A person who gets the vaccine and and flaunts it will high end shopping, trips, and parties
Once Lisa got the vax she turned into such a vaxinista
by M. Wolly March 23, 2021
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2
it means laughing my ass if but LMAOO itself can also be used by restarts who think almost every other message u send them is funny and they respond back with another LMAOO after every other message u send them.
(Christopher) : yo Jayden u saw that video where that moose was running and fell of the parking lot and died?

(Jayden): LMAOO

(Christopher) : ikr don’t forget my drunk so when u gonna come to the game?

(Jayden) : LMAOO

(Christopher) : ...

(Jayden) : LMAOO
YA
via giphy
by Lxst January 07, 2020
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3
Lmaoo is an extension of Lmao, which means “laughing my ass off”. Lmaoo is to be used when one is entertained more than your normal “lmao” situation. But not as much as “roflmao” situation.

Adding more O’s adds to how funny one finds the situation or in many cases in social media, Women add more O’s to lmao to get a male that she finds atttactive to get his attention on a post.
Example #1
Male posts a “meme” on social media:
Female commenting on males post:
Lmaooooo
Male: Dm’s Female

Example 2
Male txts a joke to female

Female responds by overly putting o’s On “lmao” such as lmaoooooooo.
by OfficialUrbanJ January 26, 2019
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4
Its another abbreviation for the term Laughing My Air Out. It's commonly used by people who suffer from breathing problems, such as asthma or lung failure
Lmaoo that was hilarious I cannot breathe
by LiL qUdDy April 11, 2020
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