You raised your child well! Wow, I couldn't do that when I was this young.
I guess this 15 years old has never been confronted before. Probably he was right, he gets away with doing what he wants to do and no one tell him otherwise...untill Ben comes along ( Cheers for BEN!!)
Ben did not mention about the throwing of his Transofrmers was the cause of him asking to the boy to leave. Probably he went back home and told the adults something else.
The adults might need to talk.