asap: as soon as possible,尽快;
aka: also known as,也可以称作;
afk: away from keyboard,离开一下;
cul8r: see you later,回见;
brb: be right back, 马上回来;
fyi: for your information,供参考;
hand:have a nice day,祝你今天愉快!
sit: stay in touch, 保持联系!
pcm:please call me, 请打电话给我!