Answer:
Many have heard it, but nobody has ever seen it. It will not speak until spoken to. What is it?
They're up near the sky, on something very tall. Sometimes they die, only then do they fall.
Two people are born at the same moment, but they don't have the same birthdays. How could this be?
Of these things - I have two. One for me - and one for you. And when you ask about the price, I simply smile and nod twice.
I bind it and it walks. I loose it and it stops.
This food is a tortilla filled with cheese and sometimes chicken before being heated or cooked.