You know. . .I belive I'd make another telephone call to his parents. This time, I think I'd attempt to persuade them to convince their child to quit terrorizing your child, as well as attempting to intimidate you. I am not sure where you live, but we live in GA, and here that kind of intimidation is actually against the law. One of our neighbors had a similar problem (although not with a child) with another neighbor who would come out of their apartment and stare her down. . .this went on for months, until she finally went to the police. We were all surprised to find the police could (and DID) actually inform the woman that she WOULD comply with non-threatening behavior or she would go to jail. Yay! Score one for the good guys. So. . .you have options, I'm sure. I doubt it will go this far, but don't back down whatever you do. We might have been victims before. . .but don't let a fat, mean kid victimize you now.