MIL got food from the local fish and chips shop. Came with a free bandaid in the burger she got. She went back up to complain, and just ask for a fresh burger and they abused her and said she much have put it in there. It was one of the blue hospitality ones, where would she have gotten that from? They were really rude and none of us have been back there since. It wouldn't have been so bad if they had apologised and replaced the food.
My ex used to work at a KFC and would tell me horror stories about cumming into the flour they use to coat the chicken.