The zagrouta, also spelled zaghrouta, is a traditional ululation from the Middle East and North Africa, long associated with weddings and other joyful gatherings in Arab, Levantine and Berber communities. Passed down through family celebrations rather than a single song or film, it travelled with diaspora communities and wedding videos online, where its unmistakable trill became a shorthand for celebration. Creators now reuse it far beyond its original setting, using it to mark happy arrivals, cultural pride and festive moments in short videos.