Describe any and all terrible food you've eaten, terrible restaurants you've visited, terrible meals you've attended, terrible cooking skills by friends and family, and other terribe foodstuff-related topics.
As for the first two, that's covered by a local diner in my town, Billy's. It's got some sentimental value, yeah, and the people there are some of the nicest folks around, but for the most part their foods are very poorly made approximations of Denny's dishes that all feel like re-microwaved leftovers. At least their coffee's okay, though.