I've eaten chitterlings (really, that's chitlins). I did not want to eat them. But I was a guest in my best friend's home (high school) and that's what his grandmother was making. I have no plans to ever eat them again.
I had a similar experience at a party after a show one night. They weren't awful, but even before I found out what I was eating I was not fond of the taste or texture.
What's funny is how many of the regional foods listed here I've eaten, but seldom if ever in the regions from which they come. We used to make Brunswick stew all the time (using squirrel, typically, sometimes rabbit, shot behind the house), Muffuletta I've had the great pleasure of eating in New Orleans, same with pimiento cheese sandwiches. Salt potatoes I can only assume are something different from the boiled salted potatoes my grandma served with every meal, or at least I hope so. While I've never eaten actual Skyline chili, I have eaten chili over pasta and I'm not a fan. Oddly, I had no idea there was such a thing as a specific Detroit-style pizza, but if we're talking about it being square then that's what we made throughout my childhood. Red-eye gravy was another thing my grandma and mother used to make all the time, although I've also eaten it any number of times in the South.
Indian fry bread I've never had from Arizona or New Mexico, but the tribes here make some that melts in your mouth while still being chewy and filling. Fish tacos I didn't know came from SoCal, since I first had them at a restaurant in Detroit. I also had no idea soft pretzels were a regional thing...they taught us how to make them in high school home ec class and I used to get them at the mall all the time when I was a kid. Crawfish I happily learned to eat rather than avoid while swimming while I was in Biloxi. Is breakfast scramble really regional to Wisconsin? In our family, that's a traditional Christmas breakfast, because you don't have to mess with a bunch of different pans.
I just realized through the course of going back and forth to gather the names of stuff I come across snippy. I didn't mean to...a lot of these I honestly had no clue they were considered regional specialties. My family has been from nowhere else in the US since they came over from Europe, and many of them are standard dinner fare with us.