Among the more common veggies, I haven't eaten brussel sprouts, rutabagas, Swiss chard, or sorrel. Looking at
this list of vegetables, there's even more that I haven't eaten than I thought.

Don't even get started on the
fruit!
Stevez, have you eaten anything else at McDonald's, or just not a burger? I'm actually jealous of anyone who's been spared anything at McDonald's (except their fountain Coke- I didn't notice it until someone else pointed it out, but whatever mixture they use in the fountains seems to be better and unique from any other place- perfectly fizzy, nicely sweet, even with the HFCS.)
I'm curious about the milkshake-less life you've led, janschher. Lactose-intolerant?
Meat-wise, I've had beef, pork, chicken, turkey, duck, lamb, buffalo. No ostrich, elk, boar, alligator, rattlesnake, pheasant, squab, ortolan, etc. Of the ones I've tried, I've never done any organ meats. I think if I wasn't told it was organ meat, I probably would eat it, but I don't know if it's something I'd seek out. Actually, I had liver once, when my grandfather ordered liver & onions in a restaurant, but I didn't really like it.
Seafood, I've had relatively little. Tried eel, wasn't my thing. Love sushi, but I stick to salmon, tuna, shellfish, etc. Don't know why. I've had red snapper sashimi, but it just didn't taste like much to me. I love octopus and squid (only had it as corfu salad and calamari, though.) I've never had snails. I tried raw oysters and the texture was just not my thing. I've had them in stuffing and seafood stew, and it was fine in there.
Texture isn't usually a big deal for me, but there are some extreme examples- raw oysters; my mom made a spaghetti sauce with chopped bacon in it that was just...wrong. I have a friend who doesn't like any pudding-like textures. We once convinced him to try creme brulee at an Italian restaurant, because what's not to like, and he just about turned green.
Is it kona crab that's really difficult to eat because of all the shell fragments you have to work around? I ordered it once at Bob Chinn's and Bob happened to be passing by- he stopped and said I must be up for a challenge. If chicken wings and cherries are too much work, I'd advise against the Kona crab!
I knew about pluots, but I didn't know about all those other variations- fascinating!