Looking elegant or majestic AND sexy, literally or imaginatively, when nude; a variation of looking classy in your birthday suit. "Fanum" meaning "phantom", i.e. invisible clothes (naked), + "Tax" meaning "tux/tuxedo". Fanum tax is a connotation of the word "birthday suit", but the terms themselves are not equivalents.
Jamie: Stephanie is so classy and smart.
Arlie: She's always wearing unflattering clothes.
Jessica: But she still looks so good. She's so fanum tax.
Jamie & Arlie: For sure!
Arlie: She's always wearing unflattering clothes.
Jessica: But she still looks so good. She's so fanum tax.
Jamie & Arlie: For sure!
by lingolamb October 14, 2023

When a friend or family member takes a part of your meal/snack, derived from Kai Cenat's fatass friend, Fanum.
by ipartlyenjoymonkeys October 31, 2023

by Weldini October 11, 2023

by GyattMan69 July 9, 2024

Fanum is a streamer that is part of the streaming group "Amp" he is a fat fuck who takes other peoples food who lives in the house, he calls it "Fanum Tax"
by HelpBloo October 31, 2023

Fanul tax comes from the Twitch streamer Kai cenat when Kai is ofițer streaming and eating food fanum comes and gets a intire portion or often a bit of the food that Kai is having during stream
by Miksgottakenaway December 15, 2023

My child, Little Timmy, was taken by the Gyatt Skibidi Baby Gronx Fanum tax Ohio rizzy Rizzler Grimace shake Lord for his balls to be sucked dry.
by Nigglers in my butthole April 5, 2024
