I don't feel like going back a page to find out what acronyms have already been mentioned...but lemme think of what I can that I don't see here...
WTF? (what the ****?)
ROFLMAO (combination...I think you can get it)
JK or JP (just kidding or just playing)
NP (no problem...I have a problem when people text me this, because I always think that they meant to text "NO" when they're trying to say, "sure, no problem" lol
I'm sure I can think of more if I try...
