What we call burrito in america is called " taco" in mexico. A tortilla wraped with anything.
Tacos sold at taco stands in TJ are called " taquitos"
Tacos sold in del-taco or taco bell do not exist and you will never find them in mexico.
Tacos that are hard shelled and rolled into guacamole or other sauses are called " tacos dorados"
Other tacos are called...flautas.
Many words to many different types of tacos but never called burrito in mexico. Other than TJ and some northern parts of mexico due to Anglo-american tourists.