brb         Be Right Back
btw         By The Way
gtg         Got To Go
idk         I Don't Know
jk          Just Kidding
lol         Laugh Out Loud
ltr         LaTeR
l8r         L_8_R
np          No Problem
otp         On The Phone
sup         what'S UP
sys         See You Soon
thx         THanks(X)
ttyl        Talk To You Later
w/e         What Ever
yw          You're Welcome
zzz         tired/bored