The sound comes from a Polish viral video in which a man filming by a roadside spots a beaver, called bóbr in Polish, and shouts at it in excitement. English speaking viewers heard the word as bobber, which fixed the misspelled name to the clip as it spread. As a Polish meme it travelled through reposts, compilations and later short-form video and soundboard sharing, where the shouted phrase became shorthand for spotting something ordinary and reacting as if it were incredible, rare or completely unbelievable in the moment.