dancing swede.mp4 or 1644089987979.mp4 is an MPEG4 video-soundpost that circulated around the party on January 26-27, 2022. The video depicts a looped animation of Impish Basedak Ears dancing to the ending theme from Super Mario: World,[1] which had previously been uploaded to the Basedjak Party Video Archive[2] and to the 'ru;[3] however, in this particular instance, the animation loop is merely a bait-and-switch that after a few seconds cuts to a screaming toddler being violently anally raped before the rapist kills her.

Due to the video's bait-and-switch format, dancing swede.mp4 caught countless victims by surprise. Many users on the party have expressed lasting psychosis and PTSD, with one claiming that he will "never see children the same ever again".[4] The impact of the video was so widespread that it consumed even /bant/; a frogposter claimed that this event could be the end for Impish Basedak Ears,[5] while an anime poster warned people of the threat.[6]