pickles, and onions. I'm, like, old now, and I'm still not over it.
I've learned to like a lot of things that I didn't like as a kid (pretty much everything). But not pickles.
I can now enjoy a good spicy mustard or a good honey mustard. But not the yellow stuff.
I like a lot of onions now. In the right context they can be great. But they're still not my first choice.
And pickles... literal barf.