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ROFLTSO is an internet acronmym for Rolling On Floor Laughing, Tongue Sticking Out. It's an overjoy laugh while tongue is sticking out, teasing, making fun of or joking around.
A. Hellloads! Ann is a real slut.
B. ROFLTSO, "sluts got talent" :P
ROFLTSO by primaverabebe January 5, 2011
Related Words
Derived from the word rofl, or "rolling on floor laughing." It means "rolling on floor laughing then shit myself."
Guy one - "That girl is fucking beat."
Guy two - "ROFLTSM!!1!"
Guy one - "...Shutup."
rofltsm by KFlavin June 28, 2006
It means, Rolling on FLoor Until Stomach Hurts. It is derived from rofl or roflmao and is believed to have been first used in the Malaysian gaming community.
Friend A: "I just pwned myself with the RPG"

Friend B: "roflush u sux"
roflush by erickoh June 24, 2008

roflutilityvan 

The roflcopter and roflutilityvan serve the same purpose although unlike the roflcopter the roflutilityvan only visits 3rd world countries, the roflutilityvan can be identified by the distinctive bullet holes in its side and the word UN crossed out and replaced with ROFL.

Due to hostile conditions the roflutlityvan never stops but instead does drive by's in which it deploys gas grenades filled with laughter!
Child1: Omg its the roflutilityvan!
Child2: Omg are they wearing flak jackets?
Child1: Omg is that a bucket of sand!1!!!1!
ROFL Man1: Freeeze this is the rofl police!
roflutilityvan by Snowwy July 16, 2008
Rolling on the floor laughing, unable to speak
"Why did the chicken cross the road?"
"OMG ROTFLUTS ROFLCOPTER!!!!!11!"
ROTFLUTS by Jessepapaaa November 16, 2006
rolling on the floor laughing unable to speek

used mostly in IM
man: why did the chicken cross the road?

man2: why?

man: to get to the other side!

man2:rotfluts
rotfluts by Jon Connor Smith February 19, 2008