Nice try, Sgt., but it stands for Rolling on the floor laughing my god damn ass off you fucking bitch ass piece of shit.
I was rotfflmgdaoyfbapos at that forum!
Short hand for:
Rolling on the floor fighting lemurs much grosser day-by-day after opossums your father breeds attack Peat on Sunday
OMG! I'm rotfflmgdaoyfbapos! Call 911!