This word is a freakin' combination of rofl, lol, lmao and omg. You sure hope it can be longer, right?
Notice the OMG at the back? It means that you're only reacting surprised after laughing like mad. Most preferably ends with a question mark.
Brat A : diablo 2 lagd like hell.
Brat B : why wut happnd?
Brat A : playd hell hc n got killd by a f***in fallen... usin ur lvl 85 baba
Brat B : rotflolmaomg!!??
A combination of nearly all laughing acronyms in the internet and texting world meaning: rolling on the floor laughing out loud and laughing my ass off.
A: Wanna go beat up Mike Tyson?
B: It's a little too hard.
A: That's what she said!
B: ROTFLOLALMAO!
Rolling on the floor laughing out loud while peeing in my pants. Something some ghy made up on AIM messenger.
me: hey did yo see that dude over there?
Friend: no who?
me: he slipped on a bottle cap in the middle of the road and fell on his face! it was funny.
friend: rotflolwpimp thats hillarious.