2008 Article in Wird on Errol Morris.
"You know, the whole term ski mask is itself a joke," he says. "If you saw somebody--you're skiing in Vail, and you saw someone on the trail coming from behind you wearing a ski mask, you would go batshit. You'd try to call homeland security, the police. God help us! You know, it's someone skiing with a ski mask! It's a fu**ing terrorist!" He's high on the energy of his riff. "No self-respecting skier would ever be caught dead with a ski mask. It would be risky. You'd get shot," he says.
I laughed a lot at this until I realized it doesn't apply when you're skiing in 8 degree weather, which I have.