Personally I believe anyone stupid enough to go to KFC for a meal is asking to find something gross in their food--and usually it's just the chicken (which is why I only eat my meals at Popeye's Chicken thankyouverymuch). But one unsuspecting Brit probably got more than he bargained for when he bit into his chicken and saw a nice big hunk of brain. While 'brains, though popular in Cantonese cuisine, are not often to be found in' the Colonel's secret recipe. Now, the chicken chain has belied everyone's fears by saying that, upon inspection, they've learned it's not actually brain but perfectly healthy kidney, which poses no safety hazards.
But that isn't taking into account the safety hazards of a restaurant full of vomiting people that would occur once I saw that in my food, threw up all over someone's face, who in turn threw up on the face of the person next to them and so on and so forth--not unlike that scene in Goonies when Chunk describes fake throwing up in a movie theater which led to a vomitfest from all the other attendess.
So while you enjoy your lunch at your desk, feel free to lose it by perusing out gallery of strangest things found inside food. Delicious!