ROTFL

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

   <chat> Rolling on the floor laughing (or rolls...).

   Used in a {MUD}, {news}.

   See also {ROTFLMAO}, {ROTFLOL}.

   (1996-02-22)
from V.E.R.A. -- Virtual Entity of Relevant Acronyms (June 2006)
ROTFL
       Rolling On The Floor Laughing (slang, Usenet, IRC)
antiflux / dictionary / ROTFL
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