There is a live version of Bruce Springsteen's song "The River" which includes a speech about Bruce's teenage head-butting with his Dad. If you've ever heard it, you are already tearing up just reading about it; if you haven't, here's a summary.
He says (not verbatim, my memory's not that good!): "I had really long hair, down past my shoulders, and my father always hated it. One time, I got into a motorcycle accident and I was in the hospital, and my father had someone come and cut it while I was in the hospital.
Man, I was so mad. I can remember telling him that I hated him... and that I would never forgive him."
"Anyway, when I was a teenager, a lot of my friends were going off to Viet Nam - and those that came back, they were never the same.
And me and my father, we'd fight so much, I can remember him saying 'I can't wait till the Army gets ahold of you - when the Army gets ahold a you, they're gonna make a man outta you.'"
"Well, one day, I got my draft notice. And a few days before I had my physical, I didn't come home - just stayed out with my friends, and never went home. And when I had my physical... I failed.
And I went home, hadn't been home in days, and my father was sitting at the kitchen table. And he said, 'where you been?'"
"And he said... 'well, that's good.'"