I think this might be more crazy than dumb but... I used to work in the restaurant of a hotel, and one time we had this group come in to stay, they were archaeologists and were visiting local sites using the hotel as a base. On the first morning at the self-service breakfast stand a woman started becoming hysterical that there were bacon and sausages on offer, then got more so when she saw the fried eggs, she demanded to see the manager and asked him why there were such things on offer. Turned out she was a militant vegan and was offended that we had such things on display where she could see them, saying it was ruining her stay. Mercifully the group threw her out the next day, after having to endure her whining about everything on the menu at night and telling everyone how the food they were eating was cruel.