Joy Masoff fell into the world of the gross when she became scoutmaster of a den of burping Cub Scouts. Two years later she started a Brownies troop, which was equally slime-obsessed--proving that a fascination with the revolting is not gender-based. Ms. Masoff is also the author of Fire! and Emergency! for Scholastic. She lives with her family in Chappaqua, New York.