In 1995, Pizza Hut introduced pizza with cheese stuffed in its crust. The innovation was an immediate hit, and suddenly more people were eating their entire slice of pizza, rather than leaving the crust.
As the years passed, Pizza Hut stuck things besides pizza--like bacon and pepperoni-- in their crust. And pizza fans were basically happy with this development.
But the pizza giant may have gone too far with their latest stuffing trick, the Hot Dog Stuffed Crust, which comes with a "free" mustard drizzle.