When someone says something so funny that you feel like you are passing away.
Stephen: Remember that time Sam left the bar to puke outside and immediately got thrown in the drunk tank.
Sally: Stop! I'm passing!
Refers to cigarettes during or after smoking a softer shisha tobacco.
Stephen: Yo, I need to get to the next level, this soft tobacco shisha shit isn't doing it for me. Want to go outside for some hard tobacco?
Sally: Yes! I'm on your level, let's go.