Most Americans (except for those of us in Hawaii, and probably San Francisco as well) still think that "sushi=raw fish", and this song does nothing to dispel that notion. Sushi is actually vinegared rice, which is rolled in a sheet of nori (pressed seaweed) along with other stuff, and then sliced. (The finished slices are also known as sushi.) Sometimes it's stuffed into a cone of seasoned tofu, or served in a little ball with a slice of other stuff on top. The "other stuff" can be pickled or fresh vegetables, wasabi (horseradish paste), cooked fish or seafood, and, yes, raw fish. Which is no doubt how the confusion got started. Raw fish that's sliced and served as an appetizer or a meal is not sushi, but sashimi. See, there are pedants in other areas, too!

Aloha,
Mark