It stand for Jesus OF Suburbia. A song sung by Green Day on the album American Idiot.

It Stands For Just Wondering. it can also be jw.
Mostly used for Chatting or Instant Messaging or Email.

Stands for Be Back Later
means brb ( Be Right Back) only BBL means you will be gone longer. USed In chat rooms and Instant Messaging.

a old word that means cool. People use it for humor or just to have fun.