Answer:
What kind of nut is empty at the center and has no shell.
I'm flat. You use me everyday. You need me to live. But you give me away everyday. I'm coloured and I have a founding father on me. What am I?
What can be swallowed, but can swallow you?
At first, I am nothing. Add something to negate. Add again to oppose. Add again to find the time to draw. Add once more to find nobody at all.
The person who makes it has no need for it. The person who purchases it does not use it. The person who does use it does not know he or she is. What is it?
This food is a tortilla filled with cheese and sometimes chicken before being heated or cooked.