Thomas & Friends (1984)

S13E5 Slippy Sodor

After discovering a crack in his funnel, Thomas heads to the Sodor Steamworks for a new one. However, the only available funnel is oddly shaped and vividly colored, making Thomas feel self-conscious. His embarrassment intensifies when he's tasked with delivering bubble liquid to Mr. Bubbles’ circus performance, leading to unexpected challenges along the way.