"Happy Brush Day" is an episode in the first season of LazyTown.
"It's Ziggy's birthday and all he wants is taffy. When Sportacus' gift, a brand-new toothbrush, is discarded for a super-automated voice-activated taffy shooter (given to him by a disguised Robbie), trouble ensues. Ziggy eats so much taffy that his mouth is glued shut with candy and he can't tell the machine to stop! LazyTown is drowning in taffy. Ziggy must use his new toothbrush to save the day, but it's at the bottom of a sea of candy!"
In 2007, Simon Spotlight and Nick Jr. released a book based on this episode, titled Happy Brush Day!. It was adapted by Justin Spelvin and illustrated by Tino Santanach.