The exact origin of this clip is unclear, and it circulates mainly as a short soundboard and meme reaction rather than as a widely credited anime quote. Its spelling, fuwah, mimics the drawn out, flustered way the line is shouted, which helps it stand out in search and shares. Short reaction sounds like this spread through edits, streams and group chats because they need no context to land. It remains popular for the same reason, giving creators a quick, recognisable burst of disbelief for any surprising moment.