One of the things they have at World of Coka-Cola is a room where you can taste different sodas from all over the world, most of which I had never heard of. There's a notorious one called Beverly that everyone seems to hate, that comes from Italy. The tour guide even said make sure you have your camera out when someone is about to try it. It's a whole thing.
But I tried Beverly, and while it was pretty bad (mostly it tasted like carbonated fresh grapefruit IMO) it was not the worst.
The worst one, by a large margin, was Sour Plum Fanta from China. The color was like a dark, opaque ginger ale, the odor smelled like literal garbage, and the soda itself tasted like a bottom shelf bbq sauce. It was truly awful. I had one sip and couldn't take anymore. I remember a long time ago I drank one of those novelty bacon-flavored sodas that literally just tasted like pure liquid smoke. Sour Plum Fanta was worse. It's the type of thing you switch with another beverage as a prank. And you would go to hell for that. It would not be worth it.
Sack to crack, going to town