The clip comes from a Bankzitters housewarming video featuring Koen van Heest, where his brief Wat became a standout reaction moment for viewers. Bankzitters are known for their playful group videos, and short exclamations like this travel easily because they need no context to land. Fans began reusing the sound in edits and replies whenever something surprising happened, turning a small celebration moment into a reusable expression of disbelief that still circulates in Dutch online humour.