Okay A LOT of people that I know don't know them so I just wanted to give a mini lesson of it
cya - See You Later
Talk to you later - Talk To You Later
w/s or W.Salam - Walaykom Assalam *meaning bye/hi*
hey/hello/elo - hi
Be right back - Be Right Back
tyt - Talk Your Time
lmt - Let Me Think
FTW - For The Win
By the way -By The Way
tbh - To Be Honest
idk - I Don't Know
BFF - Best Friends Forever
iA -inshAllah *if god wills*
mA - mashAllah *WOW*
da - The .....this - this ..etc
sup - how are u?
Ditto - Me too
atm - at the moment
Thank You - thank you
Man that's ALL i can think of right now -.-
hope it helped