A special kind of Berserk Button
: wasting food. If a character sees another throwing away perfectly good food, or "disrespecting it" in some way (usually smacking it from someone and letting it fall to the ground), they snap. Most of the time they'll even explain to the waste why
they're so angry.
Usually this comes about in a character because they were very hungry in the past, and they now know how important food truly is. Or maybe their own parents had this button and it passed down to them.
Anime and Manga
...and many, many others.