Why would you stop them? They might pass their genes on now...

Next time don't say anything. Natural Selection ;)

I'm honestly just surprised they weren't huffing it.

Oh my this sounds like my school

Let them. at least their mouth will be shut for a while....

You mean to tell me Ralph Wiggum made it to high school?!

Everyone knows that teenagers have self-control issues, and think they're infallible.

FYL OP. I can believe it, though. In my high school art class I and II, I remember a few student who would sniff it, or let it dry on their hands and be freaked out when peeling it off because it looked like skin. The teacher just tried ignoring them.

Sounds like something my classmates would do...

For a second I thought you taught Marines!