Hot Leaf Juice comes from Avatar: The Last Airbender, the Nickelodeon animated series that ran from 2005 to 2008. In the scene, tea-obsessed Uncle Iroh shares his drink with Prince Zuko, who rejects it with the insulting description and shocks his uncle. Fans clipped the exchange because Iroh's love of tea is a defining running joke throughout the show. The line later spread across GIFs, edits and soundboards as shorthand for culinary disappointment, and it remains popular with viewers who grew up quoting the series and its oddly serious tea debates.