Some of the Craziest Junk Food Ever Created (National Junk Food Day, July 21)

Some of the Craziest Junk Food , Ever Created.

Food seems to be getting more and more extreme these days.

Here are some of the craziest junk food concoctions out there.

1.

, The KFC Double Down, introduced in 2010, substitutes two fried chicken fillets for a bun.

Inside lives bacon, two kinds of cheese and "secret sauce.".

2, The UK got treated to a hot dog-stuffed crust from Pizza Hut 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 cheese sandwiches.

4.

, Guy Fieri's "Guy's Cheesecake Challenge" 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?