Some of the Craziest <br />Junk Food Ever Created Food seems to be getting more <br />and more extreme these days. <br />Here are some of the craziest <br />junk food concoctions out there. 1. The KFC Double Down, introduced in 2010, substitutes two fried chicken filets for a bun. Inside lives bacon, two kinds of cheese and <br />"secret sauce." 2. The UK got treated to a hot dog-stuffed crust from Pizza Hut <br />in 2012. 3. Friendly's rolled out the Grilled Cheese Burgermelt in 2010. True to its name, It's a burger in between two grilled <br />cheese sandwiches. 4. Guy Fieri's <br />"Guy's Cheesecake Challenge" <br />is currently available at his Vegas Kitchen and Bar. It's cheesecake covered in hot fudge, pretzels and potato chips. 5. Denny's Fried Cheese Melt, introduced in 2010, is a grilled cheese stuffed with fried mozzarella sticks. 6. Dunkin' Donuts' Glazed Donut Breakfast Sandwich uses two glazed donuts in place of a bun. 7. The Bacon Bun Burger is just what the name suggests; "buns" made out of bacon instead of bread. What could be better?