A Frito Pie is a bowl of Frito chips covered in chili, cheese, sour cream, and other Mexican food condiments. You eat it with a fork like you’d eat a casserole.
If you pour that stuff into a bag of Fritos, it’s called a Walking Taco or a Taco-On-The-Run.
Close your eyes. Imagine a Taco walking around or running on its own.
If you saw a taco doing that, would you let it pass, or would you chase it down and try to eat it?
Eat too many Frito Pies, and you may have nightmares of the things chasing you.