I'm scared to jump./ I hate to fall./ Clowning is no fun at all!/ Stepped on,/ Shot at,/Cut in half,/ lust to make some people laugh. . . ."" Those bouncy lines and a few more verses like them are all there is to the text of this oversized picture book, which is illustrated with overblown, brightly colored pictures of a typical circus clown being fired from a cannon, leaping into (and through) a firemen's net, and being chased by tigers, squirted by an elephant, and of course smeared with pie in the face. A real surprise comes at the end when the clown's makeup and costumes come off and we see the real person, glad the performance is over--a grinning, natural-looking young girl. Readers are sure to grin back. The question is whether this one trick is worth all the fanfare.