The exact origin of this clip is not documented, but its style fits the short reaction sounds shared on meme soundboards and social feeds, where an exaggerated voice and a quick laugh can carry a joke without any context. Ripper is Australian slang for something excellent, and stretching it into ripperrrrrrrr turns a simple compliment into a playful taunt. Like the laughing dog meme, it works because the sound itself tells the listener how to feel, so creators keep reusing it for wins, fails and light-hearted roasts online.