Boulin circulates online as a short meme sound rather than a line tied to a widely documented film, show or song, so its appeal comes from reuse rather than a single famous scene. Creators share it in soundboard collections and short-form edits, where its sub-second length makes it easy to drop into jokes, reactions and rapid cuts. Because the word itself is unfamiliar to many listeners, it reads as playful nonsense, which helps it fit different contexts without needing explanation. That flexibility is why it keeps appearing in new edits.