Whamageddon is a viral social media game that begins on December 1st and ends at midnight on Christmas Eve. The objective is simple yet stressful: participants must try to go as long as possible without hearing Wham!’s 1984 hit song 'Last Christmas.' While remixes and covers are technically allowed, hearing the original version results in an immediate 'Game Over,' sending the player to 'Whamhalla.' Originally popularized in the mid-2010s by a group of friends in Denmark, it has since become a global holiday tradition. The meme is used to document narrow escapes in shopping malls or tragic defeats when the opening synth notes unexpectedly play in a public space.