“Go to sleep” is one of the most recognizable phrases tied to Jeff the Killer, a well-known internet creepypasta character that spread widely through horror forums, reposts, and YouTube narrations in the late 2000s and early 2010s. The quote became shorthand for the character’s creepy persona and is still reused in horror meme culture, fan edits, and dramatic readings. Its staying power comes from how simple and eerie it is, making it easy to drop into short videos or prank audios without any extra context.