LOL = Laughin out loud
LMAO = Laughing my a$$ off
ROTFLMAO = Rolling on the floor laughin my a$$ off
PMSL = Pi$$ing my self laughing
BRB = be right back
AFK = away from keyboard
BBL = Be Back Later
L8R G8R = Later Gator
Took me ages before i had a clue what lol meant, i kept reading posts and every bloody sentence had a lol after it, but i got pmsl and lmfao worked out straight away.Some people use lol when i highly doubt they're actually laughing out loud but that's internet alk for you!!!