This line comes from Futurama, season four, episode four, Less Than Hero, where the whispered setup and sudden Gotcha capture the show's habit of turning a small secret into a quick visual gag. Clipped from the episode, the moment circulated on soundboards as a short reaction for pranks and reveals, because the two-part delivery is easy to recognise even without the picture. It remains popular with Futurama fans and meme editors who want a fast, playful way to signal that someone has been caught out, and its short length makes it easy to drop into videos, streams and chats.