.... I'm currently dealing with the fact that, if my timeline were synced with yours, I'd be not much younger than they are. It's 2004 for me, and I think Daniel said it was 2019 for him.

[tldr, he's solidly in the same age bracket.]

Even back in the 80s, American media had a big influence on global culture. So, if I were to hazard a few guesses...

[He tilted his head towards Johnny now, wishing desperately that he had a cigarette in that moment. ]

Your father seems like one of those guys that peaked in high school. Even in my timeframe, he'd be seen as... Let's call it crude. The machismo he acts with was... Big in American cinema when I was in high school. So, given that...

[He now gestured to Daniel. ]

I'm willing to bet money that Daniel was much like I was in high school. Quiet, not many friends, with a lot of pride in himself for his size and not willing to tolerate people looking down on him.

[Was he... Projecting? Maybe. ]

So. Something happened between them in high school, probably involving Karate, and your father never fully worked through it. Then, something else would have happened more recently and Daniel, with that pride of his, wouldn't be able to just ignore it.

[A shrug. He didn't need to know them to hazard those kinds of guesses. ]

How am I doing so far?