The line comes from American streamer and YouTuber Charles White Jr., known online as MoistCr1TiKaL or penguinz0, whose deadpan commentary made the unusually ecstatic outburst stand out. Clipped from his streams, the audio spread across YouTube, TikTok and Discord as a universal celebration sound, often paired with a drawn-out YAAAAAAAAY cheer in meme edits. Because the phrase names the feeling directly, creators reuse it for any payoff moment, from gaming victories to reveals, and it remains recognizable even when only the opening woo is played.