Sorry to hear about the Mustang and your brother. Not nearly as bad, but less than a week after I got my truck back from the painter's, some punks egged it. I had the Mustang in back up on jackstands still finishing up the suspension, or I wouldn't have had the truck parked in the driveway in front of my house. This was the third time in the four years that we've lived here that our cars have been egged. The previous times, my wife's Cobra Mustang appered to be the target. Though a single egg did hit the rear taillight on my new Mazda6s and broke it. This last time, they nailed both my truck and my wife's Cobra. I commented at the time that it almost seemed like jealousy. Now my new paint job has little spider marks all over it (like the shatter marks on a windshield when its hit by a small rock) where the eggs hit.
What's interesting is that in over 20 years of living in "rougher" parts of town I never witnessed one incident of vandalism towards my mom's car or any of our neighbors. Now that I live in a "nicer" neighborhood, our cars get egged, outdoor lights stolen and a couple of our neighbors have had their cars and houses spray painted.
As far as taking a punk to his parents, your more likely to get in trouble for hurting poor little Bobby. The only problem I ever had with a next door neighbor occured at another address several years ago. I was awakened to the sound of the neighbor's son throwing a baseball against the wooden fence separating our properties. A fence inside of my property line entirely built by the previous owners of the house and repaired by me. I told the kid he better stop it or he'd be sorry. Less than ten minutes later his mom was at our front door pounding on it. She demanded that I apologize to her son or she was going to call the cops and that her son could throw a baseball against the fence if he wanted to. If that had been me throwing a ball against the fence as a young boy, my mom would have tanned my hide so that I would know to respect other people's property and not to ever do anything like it again. And, she would have made me apologize to the neighbor for throwing the ball against the fence, apologized herself, and assured him that nothing like that would happen again.
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68 Mustang Coupe, 289 58 Chevy Apache, 235 Living together in harmony, mostly.