The precise original source, creator, and release date of Bay Defe are not reliably documented. It circulates online under this short title and is also described in Turkish as a “Defe ses efekti,” meaning a Defe sound effect. The clip fits the format of compact reaction audio shared through soundboards, messaging conversations, and short-form video edits. Its continued usefulness comes from its brevity: creators can insert it around a visual punchline without changing the pace of the surrounding footage.