The greeting comes from the Budweiser Whassup advertisements of the late 1990s, where friends answered the phone with an exaggerated, drawn-out whats up. The phrase caught on quickly, was repeated in films, television and everyday conversation, and later became a staple of internet memes, reaction videos and soundboards. Creators kept the stretched spelling and delivery because it instantly signals a casual, familiar hello. More than two decades later, it still works as a quick, recognisable way to open a clip or greet an audience.