Foods that gross you out

Uni - sea urchin. It's like eating snot: color, taste, smell, and texture wise (and I'm sure the sound of me choking it down wasn't pleasant either, so we hit 5 for 5 on every sense being a negative with one item - bonus!). Every other piece of sushi is deeee-lish, or at least edible. Don't knock it til you try it!
Any meat that contains gristle or lots of fat.
Liver - seriously, it's the septic plant of the body, the organ that purifies all toxins from the blood and lymph, why eat it?
Hot dogs
Spaghetti-Ohs and most other processed, canned foods/meals. Read the labels - don't start preserving your cells before you're dead.
Okra - impossible to fix it so it doesn't get slimy or taste bad
Casseroles - if I can't mix the food the way I like, or keep it separate, I can't do it.

All other veggies, fruits, and fungus send my way! mb, actually almost anything plant based eaten raw is WAY better for you - it's what we humans lived on for millennia and our digestive systems are programmed to handle.