[He had to learn it through experience himself, so he can't entirely fault anyone. Even if he absolutely can in this context.]

Glad to know that's still a damn thing no matter when and where you're from.

[... Ah. He's letting out a bit of a sigh before moving to remove his hat to give him a proper look at his forehead.]

Guess you didn't notice that particular bit. But it's somethin' I try to hide anyway, so what was I expecting.