We normally say Whats up or What you upto when we chat via text
are there any other alternative in informal language which we can use and which sounds cool
***** NOT A TEACHER *****
Good morning, Battery.
(1) Well, since you want to sound "cool" when you chat with other
young people, I think (think) that many young people say:
'Sup?
That's a "cool" and short way to ask: What('s up)?
See you later, alligator!!! (That's what "cool" people used to say many years ago. Today people will laugh at you if you say that.)