The line comes from The Mask, the 1994 comedy starring Jim Carrey as bank clerk Stanley Ipkiss, who finds a wooden mask that transforms him into a cartoonish, green faced trickster. Carrey's elastic performance helped the film become a major hit and a defining 1990s comedy. Clips of the Mask's entrances later spread on YouTube and meme soundboards, where this short shout became shorthand for starting a party. Its energy and instant recognisability keep it popular for reaction edits decades after release.