You're right Del, suffocating from smoking weed is pretty ridiculous. How 'bout these though:

You could set your hair on fire while smoking weed by holding the pipe and lighter to close to your face (I'm sure this has happened before)

You could get so high from smoking weed that you forget to wear a jacket, go out into the cold, and die of hypothermia.

You could suck in bong water and drown.

You could get the muchies so bad that you eat until you rupture your stomach.

I'm sure we could find lots of other far fetched ways you could die from smoking weed. Let's face it, if you're dumb enough you can kill yourself with just about anything. Think about lawnmowers and chainsaws. Shit, I remember reading somehting a while ago about the fact that hundreds of people a year end up in the emergency room after having an accident while cutting a bagel. And do I need to mention those damn deep fried turkeys?

But really, how many kids have access to a nitrous tank? And if your dumb enough to just suck straight out of the cartridge you deserve what you get. Most people think it fries your brain, however, and that isn't true. Like I said before, to the average person using a whippit, cracker, and a balloon, nitrous isn't dangerous.