Cooking up some magic.
Weird Al is not a magician, but as a musician he does have the ability to take commonplace pop songs and transform them into comedy gold. Turning an ordinary song like "Blurred Lines" into the delightfully entertaining "Word Crimes" takes a certain kind of magic. So it shouldn't come as a surprise to learn that the song parody legend is capable of performing other types of illusions. In this case, making a spherical orb float in the air for several seconds.
Pretty impressive trick. Now I want to watch Weird Al transform that pot of cold water into delicious soup.