The 'Only someone stupid fish' meme features a trio of underwater characters, namely fish, who are engaged in a conversation about a very obvious trap—a sign with bait hanging from a hook. This scene is a classic setup for irony, originating from a comic or cartoon style that captures the essence of making the obvious mistake despite clear warnings. The humor stems from the familiar scenario where someone inevitably falls for the trap, in this case, a yellow-green fish that swims right up and bites the hook, much to the dismay of the observing fish. This template has become a staple in meme culture for highlighting human folly in a simple, visually engaging way.