User:Assasin1749

They're mostly acronyms (taking the first letter of each word in a phrase to form a word or abbreviation); it's a type of shorthand.

lol= laughing out loud

bff= best friends forever

cya= see ya

kk= ok ok/ ok cool

k= ok

y= why

4= for

2= too/to

gtg= got to go

hbu= how bout you

u= you

ttyl= talk to you later

l8tr=later

tho=though

cyl= call you later/ see you later

thx=thanks

np= no problem

brb= be right back

nvm= nevermind

rofl= rolling on floor laughing

rotfl= rolling on the floor laughing

smh= shaking my head

idc= I don't care

hm= how much

idk= I don't know

tyvm= thank you very much

gl= good luck