Ievan Polkka is a traditional Finnish folk tune that became an internet favourite through Loituma's lively performance and the later leekspin animation, where a looping character spun a leek to its melody. Five Nights at Freddy's fans later adopted the tune for Bonnie, the bunny animatronic known for music and mischief, turning it into a shorthand for playful menace in edits and memes. It is often used alongside the FNAF jumpscare scream, contrasting a cheerful song with a sudden fright, and that contrast keeps the clip popular in short-form videos.