yea theres a few more dunno if you know em or not but here are some
bbl = be back later
brb = be right back
bbs = be back soon
rofl = rolling on the floor laughing
roflmao = rolling on the floor laughing my ass off
iirc = if i recall correctly
ftw = for the win
meh that's all i can spout at the moment LOL
maybe someone else can add some
