Except this guy.

I see plenty of guys wearing shorts in the winter. But those winter-short-wearers look like they're going to or from the gym. And they're running--not strolling.
This guy was strolling in shorts. With sandals. And black knee socks. This was a planned outfit--not something he threw on to go to the gym.
What's his story?
Did he see some sun and think it was 75 degrees out? Is he visiting from the tropics and the airline lost his luggage containing his long pants? Did he have some sort of winter clothes meltdown and now he can't bear to wear wool and layers? Is he a knee exhibitionist?
It's a mystery to me.