Everyone jumps off the bridge. Everyone shoots themselves in the head.
How would you kill yourself?
Personally, I'd try to get in a fight with a polar bear. I'd have a high chance of dying, but if I didn't die, not only would I be the coolest person alive, but I'd upset some hippies at the same time. win-win, don't you think?

i would run into a nazigroup and kill so much i can till they kill me

Force a shotgun down my throat and pull the trigger =D

If i was absolutely 100% positive i wanted to do this, I'd make sure there was no way to survive it, and i'd prefer something quick and painless.

Headshots are sometimes survivable, jumping off something would be terrifying as hell and can be survivable... I'd say a massive overdose of Morphine.

I don't think this is something you should be discussing about at all.