The phrase comes from the time-card narration used in SpongeBob SquarePants, where a calm voice announces how much time has passed between scenes. Editors began lifting these short announcements for online videos because they instantly explain a time jump without extra text or explanation. As short-form video grew, two hours later became a shorthand for impatience, waiting and anticlimax, especially when the result is worse than expected. Its simple wording and familiar tone keep it instantly recognisable across memes, reaction edits and comedy sketches.