Carcinization refers to the evolutionary process where non-crab-like crustaceans independently evolve into a crab-like form. The term went viral on the internet around 2020 as people discovered the bizarre biological reality that nature seems to prefer the crab shape above all others. Memes often utilize this concept to jokingly suggest that all life forms, including humans or abstract concepts, are destined to become crabs eventually. It is frequently used to comment on inevitable outcomes, repetitive trends, or the absurdity of convergent evolution, often accompanied by the catchphrase 'Nature always finds a way to crab.'