MK = Mednarodne kratice

rofl = rolling on floor laughing

lmao = laughing my ass of

cu = see you

lol = laughing out loud

wb = welcome back

tyt = take your time

brb = be right back

rly? = really?

np = no problem

ty = thank you

rtfm = read the fucking manual

wtf = what the fuck

pos = parents over shoulder

om(f)g = oh my (fucking) god

we = whatever