brb=be right back
plz=please
g2g=got to go
Cya=see you
lol=laugh out loud
idc=i don't care
idk=i don't know
gr8=great
l8er=later
ttyl=talk to you later
rofl=roll on   (the)   floor laugh
btw=by the way
fyi=for your infoumation
asap=as soon   as possible
jk=just kidding
kthxbai=ok thanks bye