8 year old writing hurtful/threatening note to friend

Amanda • Married 💏 mother to three 👦🏼👧🏼👶🏼

Hi Guys! So I just found this note in my sons room while cleaning. It says “ you’re so pooped up. You are peed up. You throw up in your bed. Do not pee your pants dude. You’re a bitch Ben. I do not want to be your friend. Your mean, so very mean. You pee your pants. You are stupid, very stupid. I want to kill you.”

I am mortified. I don’t want my son to be a bully. I know his dad and I are going to need to sit down and talk to him and he needs to have a consequence but I’m having trouble figuring out what would be appropriate. He’s a very sensitive boy who does have some anger issues. And he obviously never gave this to his friend. But I’m still beside myself that he wrote “ you’re a bitch” and “ I want to kill you” ! 😔😢