The MSN nudge sound comes from MSN Messenger, later known as Windows Live Messenger, where the Nudge feature let users shake a chat window to demand attention. The feature became especially associated with mid-2000s online chat culture and is still remembered as one of the most iconic instant messaging alerts. Today the sound survives in nostalgic memes, retro internet edits and fake messaging skits because it instantly signals urgency, impatience and old-school desktop chat behavior.