Carp. Had it in poland. The toughest fish meat I've ever had, riddled with tiny annoying bones. Tastes a bit like discount supermarket proscuitto... not exactly horrible, but it was so much effort to eat the damn thing to boot

Most freshwater fish sucks. And all offal is awful.

Edit: Mutton is also garbage tier meat lamb is pretty good though.

Human tastes pretty weird. Like pork but much more salty.

Any wild ungulate. I've had some rodents like squirrels and nutria and so long as you let the meat chill for a couple days, tastes surprisingly good! But I've had wild boar, deer, moose, bear, and horse and they was some pretty rough experiences.

I have yet to find seafood that I like.

Irony of ironies is that I love fishing. Luckily anything I catch worth keeping my wife is more than happy to eat.

People always tell me that good fish shouldn't taste/smell fishy. I retort that I suppose good beef shouldn't be beefy either.

I'm willing to hear people out, try different fish prepared in different ways, still haven't found one that I liked, at best they're mostly tolerable.

I've figured out that I generally tend to enjoy freshwater fish over saltwater. If I catch a couple nice trout I'll eat that for dinner with my wife instead of having to make a separate dish for myself, I won't hate it, but I won't like it either and I'd probably rather have a hot dog.

And I like raw fish better than cooked.

I might actually kind of like raw oysters, but they are in no way worth the cost.

Lox isn't bad, but I'd prefer just about anything else over it.

There are a couple fish-based products out there that are so far removed from fish that they're hardly worth mentioning for the purposes of this comment that I do enjoy, like Worcestershire sauce and Asian fish sauces, katsuobushi, Caesar dressing, Crab Rangoon (let's be real, you could probably leave the crab or "krab" out of most takeout rangoons and it wouldn't change much) some Japanese fish cakes, etc.

The absolute worst is shrimp though. Nothing about shrimp is appealing to me, the taste, smell and especially the texture are all pretty repulsive.

I'm not otherwise a guy with a lot of food hangups and consider myself a pretty adventurous eater. Weird tastes, textures, bizarre fermented stuff, strange meats, etc. are all generally OK in my book, there's not many other foods out there that I don't enjoy. In my house right now I have some double salt salmiak licorice, a bottle of Malört, a wide selection of hot sauces going up to around 1 million scoville, I'm pretty sure I have both Vegemite and marmite somewhere in my fridge, some very peaty scotches, and plenty of other very divisive foodstuffs that I enjoy.

I have tentative plans to visit Iceland next year, so I'll probably end up torturing myself with some hákarl at some point. And I don't intend to seek it out, but if it happens to be offered to me for free somewhere I may consider trying whale, which I suppose is technically seafood.

Any "big game". Moose taste like swamp.

Venison can be good if it's properly butchered and stored. It so often isn't though. People will shoot a deer then leave it to hang for a day in 50-60 degree weather. Just gross.

Bears are too greasy. And they're too smart, eating them is just bad karma.

A lot of game meat can be good, people just have no clue what to do with the processing side of it. They'll spend thousands of dollars buying the most ridiculous gear to kill the damn thing, and then just fail at butchering and preserving. Hunting is the easy part.

Oyster. Anything with the consistency of snot that you're supposed to swallow without chewing isn't food. I can make my own salt water that tastes much less disgusting.

I wasn't a big fan of goat

Crocodile can be a bit hit and miss. Supposedly ‘tastes just like chicken’ but there was an extra flavour I can’t describe.

Gotta be possum. That shit is musky

Saying worst meat is a disrespect to the animal that was killed

Uni (sea urchin) at a Japanese restaurant. It was like cold fishy jelly. Although I'm told that fresh uni is different. Not gonna try it again unless someone else at the table orders it.

An undercooked venison burger. I can't remember what it tasted like when I ate it, but coming back up it was very unpleasant

camel

You said not lamb but lamb. Nothing will ever taste worse than the lamb steak I had from a high end Brazilian churrascaria once. It straight up had the taste and texture of poop. Thinking about it makes me gag.

That's also where I learned how much I hate filet mignon

Cockroach (if that counts) and rat.

Perch and Catfish are pretty awful. Catfish more for the texture. Perch just tastes bad.

I tried kangaroo in Australia and it was not good.