Fraggle Rock S05 E02 The Riddle of Rhyming Rock

In setting out to solve the riddle of Rhyming Rock, Gobo learns from the Storyteller about a book of magic spells his Uncle Matt discovered. The book includes a spell for solving riddles. But he doesn't hear the whole story and when he uses the spell everything goes wrong and Gobo has to find a way to right the damage he has done.