From Muppet Wiki

What Makes You Giggle? suggests to the reader various possibilities for what might bring pleasure and delight. Options include a grouch birthday party, giraffes and monkeys in the zoo, a Snuffleupagus race, a wiggly nose contest, dressing up for Halloween, looking inside Oscar's trash can, playing at the pool, a Twiddlebug picnic, and Grover at a rodeo.

Other versions

• The book was collected in Elmo's Ultimate Edition Storybook in 2007, and Let's Have Fun with Elmo and Friends! in 2009.