The phrase comes from SpongeBob SquarePants, the long-running Nickelodeon cartoon that uses illustrated time cards and a French-accented narrator to mark jumps in time. Two hours later is one of its most reused cards, and clips of it began circulating as a standalone meme sound for edits, reaction videos and short-form posts. Its appeal is simple: almost everyone recognises the voice and instantly understands that time has passed, so creators can skip boring middle sections while keeping the joke clear and the pacing tight.