Top Definition
Anacronym for "rolling on the floor laughing my ass off so hard I almost peed myself." Used in chat rooms and the like to express an emotion without having to type the whole phrase.
Bill: "My new favorite music genre is nerdcore aka "geeksta rap". Check out this link. (Bill inserts link here)
Ted: "ROTFLMAOSHIAPM" that's a great site.
by Irie Mama June 24, 2005

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