Hi. My Name Is Gerald McBoing Boing. When I eat something sour, such as grape fruit, my mouth does this. When I eat something salty, like pretzels, my mouth does this. And when I eat something sweet like grapes, my mouth does this. Delicious! And there's something I think you'll like Coming up next (And Curious George Likes To Tells About Flavors About Fruits) on PBS Kids