Stands for "rolling my ass off". One of the best online terms you can possibly use. Cousins with "lofl".
d00d taht shit wuz so funny!!!111 rmao!!!!11
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Raugh(ing) My Ass Off
Occasionally used by asians as a replacement for lmao.
Janis: Dude, that kid Wes's mom caught him masturbating.
Kornya: RMAO
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Dude 1: You hear what happened to James when he tried to beat the train on the railroad crossing?
Dude 2: I don't care - guy's a douche.
Dude 1: He got owned.
Dude 2: RMAO!
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Jim, I'm RMAO with my short shorts right now. Need to keep training for the marathon.
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