Food that makes you uncomfortable

Not neccesarily disgusting - the concepts in food that make you uneasy.

Like brains - who the fuck decided those were tasty?

It depends on the animal. Wild game you want to kill as quickly and painlessly as possible so the animal doesn't tense up and leave you with a hard to eat meal.

Most animals in Asia are handled just like vegetables. Chicken head on the cutting board, lopped right off while still conscious in the middle of a busy market.