Answer:
What is weightless but takes two people to hold it?
I am mother and father, but never birth or nurse. I'm rarely still, but I never wander.
I usually wear a yellow coat. I usually have a dark head. I make marks wherever I go.
A hill full, a hole full, yet you cannot catch a bowl full.
When they are caught, they are thrown away. When they escape, you itch all day.
This food is a tortilla filled with cheese and sometimes chicken before being heated or cooked.