Probably will do no good to talk to the dad, especially if at his house. I woudn't discipline the son either.

My experience with bullys is if you stand up to them they usually back down.

I wouldn't be surprised if the kid wants to be friends with your son now.

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[SIGPIC] Diesel loving autocrossing grandpa Architect. 08 Dodge 3/4 ton with Cummins & six speed; I have had about 35 benzes. I have a 39 Studebaker Coupe Express pickup in which I have had installed a 617 turbo and a five speed manual.[SIGPIC]

..I also have a 427 Cobra replica with an aluminum chassis.