What is actual meaning of "Fanum Tax"?

"Fanum tax" is an internet slang term that describes the act of sharing or politely taking food from a friend. For example, if a friend is eating a meal and you want a piece, you might say "I'm gonna Fanum tax that". The amount you take might be 5%, 10%, or 20% of the meal.

The term was popularized by a TikTok video that featured a parody of the song "ecstacy" by Suicidal-Idol. The parody included the term "fanum tax" and other internet culture terms like "gyat", "Skibidi Toilet", "rizz", and "Sigma male".