Answer:
I am always in front of you, but you will never see me. What am I?
What is made of wood but can't be sawed?
I always run but never walk, I sometimes sing but cannot talk, No head on which a hat to place, You always look me in the face.
What's black when you get it, red when you use it, and white when you're all through with it?
Slayer of regrets, old and new, sought by many, found by few.
This food is a tortilla filled with cheese and sometimes chicken before being heated or cooked.