In the 1995 blockbuster, Bad Boys, Det. Marcus' (as played by the hilarious Martin Lawrence) perception of bologna is crushed, after his witness (Tea Leoni), explains the production process.
I will admit, when I first turned vegan (16 months ago), I was that person. Apparently, disapprovingly asking others if they "knew" what they were really eating, lol. I stopped though. I couldn't afford to lose any more friends.