Well...It is sure as hell cold up here way in the north where I live in Canada...The whole week has been in the -30 C range....
Just three days ago I got 2nd degree frostbite on the ear, which I have to say, look like donkey ears due to the major swelling and blistering...The reason? Well, I was shovelling and icepicking snow and shards of ice on my driveway for an hour and a half...without a tuke...How stupid of me...

But anyways, 15 minutes and anyone will get frostbite...Lucky I didn't get anything worse, like 3rd degree or 4th degree...