The Habbo Hotel meme, specifically the 'Pool's Closed' phenomenon, originated in 2006 on 4chan's /b/ board. Users coordinated massive raids on the virtual world game, dressing their avatars in grey suits with afros and blocking the entrance to the hotel's swimming pools. The raiders claimed the pools were closed due to 'stingrays' or 'AIDS,' often forming geometric patterns with their avatars to provoke reactions from regular players and moderators. This event became a cornerstone of early internet subculture, representing one of the first major instances of collective online trolling. Today, it stands as a nostalgic symbol of the mid-2000s web and the chaotic, community-driven nature of early social spaces.