The 'If Earth Isn't Flat' meme is a cornerstone of internet irony, often used to satirize the arguments of the flat earth community. Typically featuring a photo that defies conventional logic—such as a cat knocking objects off the 'edge' of the world or a carpenter's level used on a commercial flight—it mocks the oversimplified reasoning often found in conspiracy theories. The trend gained massive traction on platforms like Reddit and Twitter as a way to poke fun at anti-science rhetoric through pure absurdity. Today, it remains a popular template for any scenario where someone presents 'irrefutable evidence' that is obviously nonsensical or purely for comedic effect.