Bajen is the familiar nickname for Hammarby, the Stockholm football club whose supporters are known for a loud, loyal terrace culture. Short supporter sounds like this one circulate online as shorthand for that identity, letting creators signal Hammarby fandom without explaining the reference. Because the name is instantly recognisable to Swedish football fans, the clip works as a quick marker of allegiance in edits, reaction videos and matchday posts, and it keeps being reused whenever supporters want a burst of crowd cheering rather than a longer song or commentary excerpt.