Hopefully this topic won't be as divisive as pineapple on pizza, though it's in a food vein.
What weird flavours of products have you seen that just baffled, bewildered, disgusted, or enticed you?
I'll start. Just before Xmas I was going around a supermarket picking up a few essentials and nibbles, when I found a bag of crisps (chips for those across the pond) that were apparently "Roast Potato". Never did get them, though if I see them again I might have to try them out.
Decades ago, Hostess had flavors such as French fries & Gravy, Roast Chicken, and Pizza.
Their version of pizza-flavored chips was WONDERFUL, and completely unlike Pringles' version. I liked their fries & gravy and roast chicken flavors as well (apparently Lays still makes these, though damn if I know where to find them; they're on the London Drugs website but not available here).
Jelly Belly buttered popcorn. I tried them. Found them vile. But they must have a following, they turn up in sampler packs all the time.
Also, bacon on maple bars. Now I like bacon and I like doughnuts, but together... [shudder] ... kind of like Ron and Hermione, really.
Popcorn-flavored jelly beans are okay. My favorites are watermelon, licorice, blueberry, banana, and coconut.
A couple of months ago I was shopping before a medical appointment (on one of my extremely rare trips outside since this <censored> pandemic started) and happened on a display of jelly beans. One of the options was a package of ice cream flavored jelly beans... so I decided to try them.
They are
fantastic. I wish I'd bought more, both of the fruit-flavored and the ice cream ones.
Well, it wouldn't be Jelly Belly without weird flavours. They're kind of like the jelly beans from Harry Potter
I always find that chips is a food that always seems to bring out some of the weirdest flavours, and I think a lot of it is down to who can produce the most extreme and wild flavour imaginable to catch some attention on the shelves. Not that they're always good mind you, but sometimes they can be actually quite amazing and unexpected. Other times, some of them sound amazing but don't quite capture what they're trying to replicate. I think
one of my recent favourites is the Old Dutch Roast Turkey and Stuffing. It was really good! On the flipside, I tried some chips called Maple Bacon, and it didn't really taste like bacon or maple, but more like old grease.
Okay, where did you find those? Roast turkey and stuffing-flavored chips?

As the lolcats say: WANT!
I've tried maple bacon chips, or something like them - didn't Lays have them available for a brief time a few years ago? They weren't too bad.
Pringles has done a "mystery flavor" thing a couple of times over the years. The first time I noticed this, there were cans marked "mystery flavor" and they were holding a contest to see who could guess what the flavor actually was.
Well, it was obvious to me, and I haven't even had the dish in question that the chips were based on: Philadelphia Cheese Steak. I could taste the cheese and the steak flavor, and it was really good.
Pringles also made hot dog-flavored chips a couple of years ago, and they were good, too.
I tend to go through phases of "favorite flavors" and right now it's ketchup. Whether Old Dutch, Lays, or Pringles, I have a craving for the ketchup-flavored ones.
All the mentions upthread of Harry Potter have me wondering this: WTF is butter beer? What does it taste like? I've checked online, and the only thing I understand in the descriptions is that it apparently contains cream soda and butterscotch (am trying and failing to imagine what that combination tastes like). As for whether there is or isn't alcohol content in it... some recipes have it, others don't, but I remember reading in one of the books (I'm reading that series for the first time - am about 2/3 of the way through The Deathly Hallows) that one of the house elves got royally drunk, as in absolutely sloshed, on butter beer.