MSN Messenger, Microsoft's instant messaging service popular in the early 2000s, included a nudge feature that shook a contact's chat window and played a buzzing alert to demand attention. The feature became a defining quirk of that era of online chatting, remembered alongside custom emoticons, display names and away messages. As MSN Messenger closed, the sound survived through nostalgia videos, retro tech compilations and meme edits, where a single buzz instantly signals old internet culture to viewers who used the service.