I'm a picky eater, so nothing special. Although I've downed my fair share of health powder, bars, drinks and supplements. They're not the best tasting stuff.
Boogers from a dead man's nose and asked for seconds?
Most wild game (including the most dangerous game...) like deer, elk, gator, frogs, and some odd domestic stuff like oxtail (at a Jamaican joint), buffalo, etc. Some odd sushi/sashimi (eel, octopus, urchin).
a penguin, seriously, me along with my family went down do buenos aires argentina, i dont know if it was legal, because it wasnt a "certified" restaurant, but it wasnt a regular penguin its a "jackass penguin" yes i know, funny name, here is a picture of that type of penguin