Urdu Slangs

Heyyy

my lovely friends,
its been ages i havent posted something silly here lol
I hope that all of you are doing awesomely awesome lol

okay lets start with the topic..

What are the urdu slangs..
do urdu slangs vary from Pakistan to India?
and across Pakistan aswell?

like .. one of my friends she uses Chawal alot..
she says it means from an idiot to a bad word.. you can put it anyway you want..

and guys tend to use bachi alot!! lol

some slangs which I think Karachiites use alot are:
scene kya hai?/ scene on hai
fit
Chawal
etc

input people!! =P