Dedicated to 'all the kids who insisted on an underwear book', this latest instalment in the popular Arthur series is adapted from a PBS teleplay. When Binky bends over to pick up a piece of chalk, 'a loud RRRIPPP!' reveals red polka-dot underwear. Arthur finds the situation hilariously funny until he starts dreaming about being caught in his own white briefs.

Arthur's friend Buster dispenses advice, but things come to a head when Buster informs other kids about Arthur's apprehension. Embarrassed that his secret is out, Arthur rushes to escape the cafeteria, ripping his jeans and realising his worst fear. Ironically, the incident ends up curing him.