WHO`S THAT TRIPPING OVER MY BRIDGE? The three Billy Goats Gruff are hungry and want to go over the bridge and up the hillside to a fine meadow full of grass and daisies where they can eat and eat and eat, and get fat. But under the bridge lives a troll who`s as mean as he is With humorous, onomatopoeic language, call-and-answer structure, and colorful illustrations, Paul Galdone`s telling of this familiar tale is great for reading aloud with groups.