Top definition
ROSLOL is the acronym for:

Rolling
On
Spikes
Laughing
Out
Loud

Reserved for situations that are so insanely funny that you would still be laughing while rolling around on spikes.
Max: "So earlier today I was walking down the street and saw a chihuahua barking at this really big guy who pissed himself because he was so afraid...."

George: "ROSLOL!!!"
by forestelfgurl August 12, 2009
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