Lmao

Laughing my ass off or Laughing my arse off.

Used online only, or in speech by really cool kiddies

Boring Kiddie: I just killed my knee
Cool Kiddie: LMAO!
Boring Kiddie: What?
Cool Kiddie: Nothing... You wouldn't understand... *sighs*
-Walks away to class-

by XxKelzxX May 11, 2010