Answer:
My sides are firmly laced about, Yet nothing is withinΝΎ You'll think my head is strange indeed, Being nothing else but skin.
Turns us on our backs, and open up our stomachs. You will be the wisest of men though at start a lummox.
Goes over all the hills and hollows. Bites hard, but never swallows.
You can see nothing else, When you look in my face, I will look you in the eye, And I will never lie.
What has roots as nobody sees, is taller than trees. Up, up it goes, and yet never grows?
This food is a tortilla filled with cheese and sometimes chicken before being heated or cooked.