Финалочка is Russian slang built from the word final, with a diminutive ending that makes it sound small, cute and a little sarcastic. On Russian speaking social media the phrase spread as a caption and spoken sign off for posts that needed a clear ending, and the audio version was clipped and reused on soundboards as a meme finale. English speaking editors later adopted the same clip for its universal closing energy, even without understanding the words, using it wherever a short, recognisable meme ending is needed instead of a fade out.