There was once a peaceful giant scientist who lived in a castle in the clouds. One day he was puttering around in his lab and he noticed that an important item of his was missing. He searched all over, but could not find it. Finally, in a fit of rage, he shouted, "Fe, fi, fo, fum! The first of these has been stolen! The one who's taken it will pay, unless he gives it back today!" What was stolen from the giant?
( this is very tricky)