Happy Tree Friends began in 1999 as a Flash animated web series from Mondo Media, built around cute forest animals whose episodes end in sudden, graphic accidents. Nutty, the jittery green squirrel obsessed with sugar, became one of its most recognisable characters thanks to his candy-fuelled panic and frequent deaths. Clips of his screams were later ripped and shared on soundboards and in fan edits, where this agony sound survives as shorthand for cartoon pain taken to a ridiculous extreme.