Wat is dat lekker hè is a Dutch expression meaning roughly how tasty that is, and this clip circulates online as a short reaction sound rather than as a line tied to a widely documented film, show or celebrity moment. Its appeal is the everyday, conversational Dutch phrasing, which makes it feel authentic to Dutch-speaking viewers while still being instantly readable as enjoyment to others. Shared in memes, food videos and reaction edits, it has stayed in use because it is short, expressive and easy to drop over almost any satisfying moment.