Son of did not get in trouble. Teacher/Principal said it wasn't a big deal and the kid had it coming to him. They just wanted me to address it with son of
My mother had a conversation with him yesterday about it. Went something like this.
"Now (son of) when something like that happens you need to tell the teacher first"
Son of: "mmmmmmm na I'll just choke them."
In 12 years he's going to be bringing home a small blonde with a temper and a bad mouth who enjoys being choked. When that happens I'll be like