The line comes from Thomas, Percy and the Coal, the first episode of the second series of Thomas the Tank Engine, where the narration follows Thomas and Percy during a story about coal. Taken out of its gentle children's story context, the simple statement about leaving gained a second life online as a deadpan reaction clip. Creators reuse it because its calm, storybook tone makes an ordinary exit feel deliberate and final, especially when it is placed over modern footage of people, games or arguments ending abruptly.
About this sound
The Thomas the Tank Engine narration saying it was time to leave, used as a reaction sound when someone has overstayed their welcome in a meme clip.
The clip is a short piece of calm, storybook narration from Thomas the Tank Engine, delivered in the measured, slightly formal tone of a classic children's television narrator. The speaker states plainly that it was time for Thomas to leave, with no music, shouting or dramatic pause to soften the moment. That flat, matter-of-fact delivery is what makes it funny, because it treats an awkward exit as if it were simply the next event in the story. Used over a video, it lands like a polite but final dismissal, turning an uncomfortable goodbye into a dry joke that viewers instantly recognise.