The phrase comes from a campaign by Camilla Johansson, a Centre Party politician in Uddevalla, Sweden, who used it while protesting the municipality's decision to withdraw permits for food trucks. Yallah is a widely used slang expression meaning let's go, which gave the local slogan an energetic, multicultural ring. Clipped from the campaign material, the short chant circulated online as a meme sound, detached from the original food truck dispute. It remains used for its catchy rhythm and the contrast between serious local politics and a playful chant.