Worst fair or festival burger: Krispy Kreme Burger

It's the infamous Luther (Vandross) burger, also known as the Krispy Kreme burger. That's a hamburger patty, often with bacon and a fried egg, sandwiched between two doughnuts.

The Machine Shed, the Midwest chain who manned the Krispy Kreme doughnut booth at 2010's Wisconsin State Fair, upped the ante even more with an optional chocolate-covered bacon topping. There's no official word on how bad for you these really are, but with two original glazed donuts at 190 calories each, you're looking at quite a meal from just the "bun" alone.

Credit: Health.com