LOL (or lol) abbreviation for "laughing out loud" or less commonly "lots of laughs".

• a4n (A4N) –  all for now

• brb – be right back / bathroom break

• gtg / g2g – got to go

• l8r or cul8r – (see you) later

• lmao – laugh(ing) my ass off.

• rofl – rolling on floor laughing

• sry – sorry

• cya or cu – see you

• ty – thank you

• thx / tx / tnx / ths– thanks 

• ttyl – talk to you later

• bbl – be back later

• wombat – Waste of Money, Brains, and Time

• nm – Not much (sometimes never mind)

• nvm – Never mind