ROTFLMAO

from The Free On-line Dictionary of Computing (8 July 2008)
ROTFLMAO
ROFLMAO

   <chat> Rolling on the floor laughing my ass (arse) off.  An
   extreme form of {ROTFL}.

   (2000-11-12)
    
from V.E.R.A. -- Virtual Entity of Relevant Acronyms (June 2006)
ROTFLMAO
       Rolling On The Floor Laughing My Ass Off (slang, Usenet, IRC)
       
    

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