Poor Billy Bumps, he's always bumping into things. One day he bumped into a wall. `What a silly place to build a wall,' he said. `I'll tear it down and build a palace.'And that's what he did. Everything was fine until a spider crawled up his trunk and poor Billy sneezed ...In this ingenious split-page book by award-winning artist Korky Paul, little children will be fascinated to see the wall being built up and then knocked down again.