OT for sure, Why doen't head butting hurt the butter as much as the
buttee?

In movies lately, men use head butting as a fight technique, usually
hitting with their forehead the same spot on the other guy.

Why doesn't this hurt the butter as much as the buttee?

I'd be afraid to do it. I stopped hitting my head against a wall 2
days before they let me out of Bellevue, and this seems almost as bad.

Or is it just movie nonsense.