Ditchin: Mermaidman and Barnacleboy are having a book signing, but SpongeBob can’t go because he has boating school. After some convincing, Patrick finally gets SpongeBob to take a bathroom break from class-a really long one-so they can go to the signing, and SpongeBob can just go back to class when he’s done! But the day turns sour when SpongeBob becomes racked with guilt about ditching class