The 'Krill Yourself' meme is a surreal and ironic pun that replaces the aggressive internet slang 'kill yourself' (KYS) with the name of the tiny crustacean. It gained traction in late 2022 and early 2023, often featuring a low-quality image of a krill—specifically Will the Krill from the movie 'Happy Feet Two'—looking intensely at the camera. The humor stems from the juxtaposition of a dark, hostile phrase with a harmless, microscopic sea creature. It has since evolved into a wider 'Krilla' subculture, involving various marine life puns like 'It's as shrimple as that' or 'One in a krillion,' representing a shift toward nonsensical, wholesome-looking, yet linguistically edgy internet humor.