The 'Internet is Serious Business' (often stylized as 'I IS SERIOUS BIZNUS') is a classic internet catchphrase used to mock individuals who take online discussions or minor digital drama far too seriously. Originating in the early 2000s on forums like Something Awful and later 4chan, the phrase became synonymous with 'Serious Cat'—an image of a white cat with a remarkably stern facial expression. It serves as a reminder of the inherent absurdity of heated web debates and is frequently deployed as a sarcastic rebuttal to aggressive commenters. Over the decades, it has evolved from a simple image macro into a cornerstone of early internet culture, representing the shift toward ironic, meta-humor that defines modern social interaction.