A walking taco is a taco in a bag of chips. It's simply taco meat placed in a Frito or Dorito chips and served individually so everyone can add their favorite taco toppings.
Cook the taco meat, you can leave it in a slow cooker on a warm setting or over low heat in a pot on the stove. Set out various taco toppings in individual bowls with serving utensils. Cut tops off bags of chips.