Happened at Kent state, I believe. There was an old story from Inuits about a man who was being forced off his land, so he refused the leave, and they took all of his gear and clothing, hoping he would go with his family rather than freeze to death. He then allegedly pooped, fashioned it into a knife, and killed a sled dog for the hide so he could survive.

The story was recorded by a reputable person (though probably told to him by Inuits that thought it was hilarious). In order to prove it was possible, or not, this experimental archeology lab tried it out. Hilariously enough, they tried to do it while on a regular "western" diet, as well as an "inuit" diet of mostly fish and very little fiber.