Koffie, lekker is Dutch for coffee, delicious, and this short clip has become a handy reaction sound for coffee lovers online. Its appeal comes from its simplicity: two familiar words, a satisfied tone and a length of just over a second, which makes it easy to drop into short videos, memes and social clips without slowing them down. It is most often used to celebrate a good brew, joke about a caffeine habit or add a warm, cosy touch to morning content.