Sweet potato fries. Or overly orange fries for any reason (sometimes the frying just seems to make them orange, especially curly fries?).
Was youngish, friend took me out to lunch and I had a meatball sub with sweet potato fries. Yum yum. Until, of course, 3am the next morning when all that came up and was orange and potato-y. I refuse to try them again to this day. Although I love sweet potatoes, lol, just not sp fries.