Air date: September 7th, 2007 (UK), October 6th, 2007 (US)
Thomas plays a trick on Rheneas by whistling beside him, making the little engine bump his trucks of pilings. The other engines want to join in and surprise Rusty, Sir Handel, and Peter Sam. When the Thin Controller finds that none of Thomas' trucks have been loaded, he is furious. Thomas, seeing the error of his ways, works to get everything in order, but plays one last trick on the Thin Controller and hides his trucks. When the Thin Controller discovers the trick, he declares that Thomas is "a very funny engine".
Tropes featured in the episode:
- Out-of-Character Moment: Skarloey and Rheneas, depicted in earlier series as wise old engines, spend this episode joining in with the others in being silly, causing trouble, and making a mess all over the Wharf.
