Vikings fans are a different breed.
The Vikings put a roof on their new stadium specifically for days like this. A few hours before the Vikes kicked off against the Colts, it was -20 in Minneapolis. The parking lots around the stadium do not have a roof, though, but Vikings fans were not about to let a little life-threatening cold keep them from tailgating.
I would have used the weather as an excuse to sleep in. But what do I know?