In Oregon about 25 years ago some kids dropped a goodsized rock from an overpass onto a car. Went through the windshield (windscreen) and hit a woman passenger. She will be forever disfigured- and that's after multiple surgeries.

After that there were some copycat efforts (Have you noticed that people are insane?) so the state put up tall fences on the overpasses.

I'm glad this is not a kids' forum. I doubt we'lll go out and do the stupid things that kids might.