"Billionaire Buffet" is a song by Vocaloid producer Flanger Moose, sung by Teto Kasane. A music video for the song was released on June 6, 2025, and the single was released two days later Flanger Moose's Bandcamp page.

Meant to be a purely satirical Protest Song, "Billionaire Buffet" depicts Teto as a maid who serves dishes made of the remains of oligarchs as payback for worsening income inequality.

Eat the tropes! Eat the tropes! Itadakimasu, tropers!

• Alliterative Name: The Billionaire Buffet, as well as some of its dishes, particularly Corruption Crème Brûlée, Fascism Fries, Oligarchy Omlette, Robber Baron Roast Beef, Tyrant Tiramisu, and Voter Suppression Vanilla Shake.
• Black Comedy Cannibalism: The billionaires are all but confirmed to have been turned into the Billionaire Buffet's dishes, which all have cute faces in the music video. And it's the main point of a satirical Protest Song which starts with a disclaimer that "cannibalism is gross".
• Censor Box: In the music video, Jeff Bezos' "dick-shaped rocket" (referring to New Shepard, a launch rocket by Bezos' company Blue Origin) is covered with a censor box saying "RIP my yt channel", an obvious reference to YouTube's content policies.
• Content Warnings: The music video starts with a warning that the song is satirical in nature, that violence is discouraged, and that "cannibalism is gross".
• Cosplay Café: The Billionaire Buffet is implied to be a maid cafe, with Teto wearing a maid outfit in the cover art and throughout the music video.
• Eat the Rich: Being a satirical Protest Song against income inequality, the song has a few "eat the rich" chants and a Visual Pun on the concept.
• Gratuitous Japanese: One of the lines is "Itadakimasu, bitch!", and the song title is written in Japanese in the music video's background.
• Karmic Death: The Billionaire Buffet's dishes are made of the remains of oligarchs, who are killed as revenge for the income inequality Teto protests.
• Money to Burn: A burning dollar bill is used as an anti-oligarchy symbol, in Teto's picket sign and, in the music video, the Billionaire Buffet's logo.
• Protest Song: "Billionaire Buffet" protests rising income inequality in the United States and Donald Trump's second term.
• Shout-Out:
  • Luigi Mangione is seen cosplaying as Luigi from Super Mario Bros., including on a dakimakura and in a Yu-Gi-Oh!-inspired summon attack with Teto also dressed as Mario.
  • The pre-chorus in the second half has several references to Devil May Cry, namely "slicing programs that people need faster than Vergil", the verse "devil may cry woke to deflect", the "storm is approaching" phrase from Vergil's theme "Bury the Light", and Vergil's Motivated Combo attack from Devil May Cry 5 appearing when that verse plays in the music video.
• Slogan-Yelling Megaphone Guy: The pre-chorus in the second half of the music video has Teto use a megaphone to protest Elon Musk's DOGE cuts and Donald Trump referring to himself as a "king".
• Take That!: As expected of an anti-oligarchy song, there are several obvious jabs at contentious topics like Donald Trump's second presidential term, Elon Musk's changes to Twitter / X and the US federal government, and Jeff Bezos' handling of Amazon unions.
• Visual Pun: The Billionaire Buffet has several dishes all named after the problems with the oligarchy and made of the remains of oligarchs, in essence telling people to "Eat the Rich".
• Waving Signs Around: This is part of Teto's dance throughout the song's chorus in the music video: waving a large picket sign reading "EAT THE RICH!" with a burning dollar bill.
• Well-Intentioned Extremist: Teto kills the wealthy and turns them into the Billionaire Buffet's dishes (and also serves them for free) to protest the oligarchy's exacerbation of income inequality.
• Working Class Anthem: In addition to middle-class concerns, "Billionaire Buffet" appeals to working-class concerns by protesting income inequality and Trump's cuts to Medicare and Social Security.