"So you should be! You're such a silly shape!"
- ―Harvey and Diesel
Look and Hook is a magazine story.
When Diesel is nearly hit by Harvey's crane arm, he accuses Harvey of having a silly shape. Thomas and Harvey are later sent to a factory to collect a special mirror for the seaside funfair. Thomas and Harvey decide to play a trick on Diesel using the mirror. After Harvey places it in the yard, Diesel rolls by and is shocked by his reflection in the mirror.