The scream comes from Slendytubbies, the fan-made horror game series that reimagines the Teletubbies as monsters, first released by developer Sean Toman under the Zeoworks name in 2012. Dipsy, the green Teletubby, is the pursuer in the second game, and his raw, distorted shriek became one of the series' most replayed sounds. Clips of the scream spread through YouTube horror compilations and meme soundboards, where it now sits alongside other shock noises, from the dramatic sting of suspense edits to punchy game death sounds and loud comedic shock clips. It endures because it is short, unmistakable and instantly startling.