I'd take the (insert tool of death here) away from bạn and hold bạn until it ended; coaxing bạn and trying to calm bạn down. And if that doesn't work; try and knock some sense into bạn (without hitting bạn physically)
If bạn were hanging yourself; I'd ask bạn if bạn had any spare rope hoặc cloth hoặc whatever you'd use.
If bạn were taking some pills; I'd ask for whatever's left.
If bạn were cutting your wrists; I'd ask if I could use it after you.
If bạn jumped off a cliff; I'd run over yelling at bạn to stop, then when I catch up to bạn before its to late I'll suggest that we jump off together. :) It'll add to the adrenaline rush before our untimely yet at the same time timely deaths. ^_^
If bạn were to di chuyển in front of a moving car; I'd stand there right behind bạn (stronger impact bởi being moved bởi two exceedingly, extremely fast and furious massive (NO offense, not callin' bạn fat hoặc anything) objects...
If bạn were to drink posion; Ask hoặc just take whatever's left (I mean, you'd be dead anywyas...it wouldn't really bother bạn if I took the remainders of whatever bạn used when you're dead, wouldn't it? =/)
Scream, 'STOP!' No ONE has the right to do suicide. Trust me, I've tried it plenty of times... not fun, at all. It's a serious matter and I wish people in places such as the media would understand just how tortured it can make people. Just NEVER poke fun of something like that with me, because it's not funny in the least!