Answer:
There are several different kinds, but the one you pick doesn't do its job. What is it?
I have a tongue, but do not talk. I follow close, but neither run nor walk. Coupled and hitched, but never married. You couldn't bear the load I've carried.
Thousands lay up gold within this house. But no man made it. Spears past counting guard this house, but no man wards it.
You can spin, wheel and twist. But this thing can turn without moving.
If you drop me I'm sure to crack. But give me a smile and I'll always smile back.
This food is a tortilla filled with cheese and sometimes chicken before being heated or cooked.