We all need food to survive and most of us enjoy it too, but sometimes, we're too sad, scared, or angry to eat, and that's what this trope is.

If they're sad, maybe they're grieving or getting over a bad breakup, but they could also have just had a bad day. Likewise, if they're afraid, their fear could be crippling anxiety or a response to a serious threat, but it's just as likely to be a mild thing like