I get it. I'm the same here. But I only handle the boys when I have to. Hopefully you can "figure" him out and it works out.
And yes the broody momma does teach her babies we're the enemy.
Can you post a pic of your boy? I'd like to see him.
Sounds to me like something is triggering him. Need to find out what that is.
I'm gonna throw out a warning.. heed it if you want. Stop letting your kids carry him around. He's not a lap chicken. If your doing the same with 'His' hens there's your trigger. My boys tolerate me picking up the...
How old is your Roo?
Did you hatch him or bring him in? (how long ago?)
I have 2 separate flocks (2 Roosters) I free range at different times and when I need to herd a group in, I grab a thin 2' long switch to extend my reach...it keeps them moving in the direction I want them to go.
You could...