Tongue is actually a nice cut of meat.
When I was doing some research in the Florida Keys, we dared one of our professors to eat the pigs feet. Which he did, straight from the jar, it had black bristle still stuck in it. I thought he was going to puke but he kept that sucker down. I think it was more from chewing through thick skin and vinegar that make him struggle, not so much that it was pig feet. If I ate pork, I'd have no problems using fresh pigs feet for flavoring soup or stew, there's a lot of collagen in the feet and it makes things super tasty.