Ya Wey
Often used in Hispanic groups and is used to tell someone to stop being an idiot, or used as an expression when told something unbelievable
Dude 1: Dude, Mauricio got stupid drunk at the party and threw up in my car!
Dude 2: Ya wey!

Dude 1: I stole your phone from your gym locker!
Dude 2: Ya wey! Give it back!