The penguins are immune to facial frostbite, but humans need to wear an underpantaclava in bed at night to keep the ears from freezing solid.
Keda has pointed out that her kids invented the underpantaclava too. I didn't plagiarise their work - it was a simultaneous invention, and we can divide up the global market, so long as they take the northern hemisphere and I'll keep to the south.
To keep my other parts warm, I'll be visiting Mackerel Sinus's classy HNT post this week:
If you missed previous HNTs, you can access all the old half baked thursday posts here.