Burger King is an American fast food chain specializing in, you guessed it, burgers. Their mascot is an undeniably creepy king with a smile of perversion and a troubling interest in young children.
Burger King is known for it's ad campaign featuring the King of Burgers appearing in various places and scaring the bejeezus out of people. Apparently this is an attempt ot make them try his food. This ad campaign has inspired an internet meme of the King photoshopped into various inappropriate situations.
Earlier on there was a group of kids featured in Burger King's advertising campaigns. Their absence from recent campaigns leads me to believe that the King has kidnapped and possibly killed them. This would explain what "chicken fries" are.