Despite a likable cast, there is less fun and spontaneity here than the brand name might suggest. Based on the fill-in-the-blank word game, this musical for children 7 and up asks audience members to suggest nouns, verbs, adjectives and adverbs to complete its anodyne songs. The sheer belly laughter of the game comes from surprising juxtapositions. The show plays it too safe, relying on the crowd to supply the silliness (1:00).