Today it means: A logical fallacy that occurs when someone sees contradictory opinions expressed by members of a group and mistakenly believes that those people are being hypocritical, when in reality those contradictory opinions were expressed by separate individuals. Full definition →
Named after a fictional species (Goomba) from Nintendo's Mario franchise. The term references an Internet meme depicting the fallacy using Goombas posted to Twitter by @supersylvie_ on January 29, 2024.
Etymology from Wiktionary, CC BY-SA 4.0.