The two boys attribute him running with no coat, no hat,etc. on in the snow to white people being crazy. I've heard similar come from the mouths of black people.
LOL, if you haven't noticed, some white people ARE crazy. Black people don't jog in the snow, they'd get arrested for suspicion of some crime.
You see, I just gave you another example of "black" humor. You would either have to be black or know enough of the culture to understand it.
I live in a state where the temps are usually high. I've seen black people dressed as if they were in freezing Alaska, when I'm in shorts. As they go by in their wool hats, overcoats, gloves, scarfs, I marvel, but I've never said to anyone "Black people". I figure they're just cold