LOL - Laugh Out Loud
LMFAO - Laughing My F*cking Ass Off
PMSL - P*ss Myself Laughing
ROFL - Roll On The Floor Laughing
BRB - Be Right Back
G2G - Got To Go
ASL - Age Sex Location
BTW - By The Way
KK - Ok Kool
WBU - What About You
TXT - Text
ROFLMAO - Roll On Floor Laughing My Ass Off
IMO - In My Opinion
LMCO - Laugh My C*ck off
CBA - Can't Be Arsed
NM - Not Much
FFS - For F*ck Sake
JTFC - Jesus Titty F*cking Christ
WUU2 - What You Up To?
NVM - nevermind
TY - Thank You (a bit obvious that one)
IIRC - If I recall/remember correctly
IDK - I don't Know
WTF - What The F*ck
ROFLMAOSHMSFOAIDMT - Rolling On Floor Laughing My Ass Off So Hard My Sombrero Falls Off And I Drop My Taco