You might see this term in a video of how is twitter free. My research concludes to most probable definition is the following:

L - Laughing

M - My
A - Arteries
O - Out

You find yourself in a FaceBook group chat.
Hey Susan did you see that me-me is sent you?

Yes Geraldine it was delightful! I'm LMAO.

LMAO by sub to Fainted February 16, 2021

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LMAO

Lobsters Making Anonymous Observations

Who wrote this?
Isn't it obvious? Lmao!

LMAO by Hubeebe February 24, 2021

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Lmao

L lick
M my

A ass
O onee-chan
Ofc why would it be anything else

Hey mum What? Lmaooooooooooo

Lmao by PP_lord69 February 28, 2021

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Lmao

L-et M-e A-ssault O-rally, be careful if someone says this to you!

Random creepy guy that likes radiohead too much: "LMAOOO"
girl: "omg why would you say that?"

Lmao by Joseph_2002 March 3, 2021

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