The word you are looking for is adjourn

[Couch Potatoe]

That point in a lecture, presentation or discuss in which [the audience] would like you to stop so they can leave. This is usually preceded by excessive [rambling], jumping from topic to topic with no clear clue that the audience has had enough. The comment is typically said under your breath with a slight tone of [exasperation] but is clearly heard by everyone expect the speaker.