A few hallowe'ens ago a couple of punks made the mistake of throwing firecrackers at the front porch where my roommates and I were handing out candy. They completely misjudged even this large, stationary target, and it ended up fizzling in the front yard. That didn't stop one roommate, a competitive long-distance runner, from chasing them down the street while yelling like a madman and waving a hockey stick around his head. We didn't see them again -- judging from the speed they took off, they probably thought he had really lost it.

But on a bike -- where does this sort of thing happen? I don't know that I would have viewed it with the same analytical detachment as unkchunk. Who is usually to blame? Bored suburban kids? Bored rural kids? Bored urban kids?