I choose an inert gas. It asphyxiates you but you don't feel a thing, panic, or get that bad "I'm suffocating" feeling since there is no carbon present. It flushes out the oxygen from your body.
Unconsciousness in ~15 seconds, dead in ~5 minutes. I will be testing this soon, though not much to test really....
RE: Woman…or Man?
Yeh....I've seen like two of those. They amuse me lol