see you ==> cya ex: OK, cya soon!
got to go ==> g2g ex: OK, g2g!
be right back ==> brb
in my humble opinion ==> IMHO
in my opinion ==> IMO
what’s up ==> sup?
Oh my god ==> omg
talk to you later ==> ttyl
never mind ==> nvm
because ==> blc
laugh Out Loud and Lots of Love ==> LOL
for your information ==> FLY
I’ll be late ==> ILB L8
get the fuck out ==> GTFO ex: GTFO of my house
by Jing.
Reference
[1] Therese Naber and Angela Blackwell, “English KnowHow Student Book 2A ,” OXFORD, p.p. 9