ROFLOLMAO
I've never seen anyone use that one before, probably because it makes no sense whatsoever.
"Rolling on the floor laughing out loud my *** off"...
Anyways, I don't really mind the abbreviation "lol", but more how it's used. It stands for "Laughing out loud", though I've heard it be said as "Lots of laughing" as well. Now, in my opinion, this should only be used when you're really laughing a LOT, and not in every second sentence. If you laugh your *** off after every thing you say, you're obviously insane.
Now, If you'll excuse me, I G2G, BBL, TTYL, Cya.
PS: Both G2G and BBL were accepted by my spell check, but LOL wasn't.