I remember a couple of us discovered that if you get a non-flint lighter - you know the kind that generate a small electric arc to shoot into the butane stream to ignite - you can have loads and loads of fun on a schoolbus. You had to sacrifice the lighter, but you'd have a groovy little mini-taser if you pulled out the little tiny power-pack.
We'd all get one, and then zap the earlobes of unsuspecting students. Specially the ones who were trying to catch a few more Z's on the way to school.
It's a wonder I didn't get in more fistfights back in school.