SCP-106 is a well-known creature from the SCP Foundation universe and is especially familiar to players through SCP-themed games and videos. Clips tied to the character, including this creepy laugh, spread widely in horror edits, lore compilations and meme posts. The sound stays popular because SCP-106 is instantly recognizable to fans as a slow, inescapable threat, so even a very short audio cue can signal danger, corruption or dark humor without needing extra context.