When I was a kid, I used to go around at night and throw rocks at peoples houses. I thought all kids did stuff like that, but people ive told seem to think otherwise. There was one house in praticular that was in a valley that me and my friend would always toss rocks on the roof at night and run off when people came outside. I would make sure to do this at least once a year growing up. I didnt do it for a few years but even a couple christmas's ago we went back to torment them again. As kids we would also throw stuff at cars from the woods or off of a hill or overpass. The funniest moments were dumping bags of garbage onto the traffic. Do most kids/teenagers do this stuff?

As for houses, well as long as you're not trying to break windows or causing damage then, yeah, that seems normal. Like tossing them up on a roof and confusing the hell out of the owners, I can see that as funny and probably harmless.