Top Definition
rolling on floor laughing somehow still typing, made up by when someone says rofl, they are somehow still typing so by adding the sst part it could be more humorous.
someone:why did the chicken cross the road?
other person: i dunno why?
someone: to get to the other side
other person:haha roflsst
by l33t$k1ll3r August 09, 2010

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