The reference comes from The Pout-Pout Fish, the 2008 children's picture book by Deborah Diesen about a gloomy fish with a permanent pout who spreads his dreary feelings to others. Online, the name became shorthand for anyone looking miserable or sulking for attention. This short voice line borrows that image and turns it into a teasing insult between friends, which is why it circulates in meme edits and reaction videos rather than as a clip from an official adaptation.
About this sound
A short voice clip saying stop being a pout pout fish, used as a playful reaction sound for teasing friends who are sulking, grumpy or in a bad mood.
This clip captures a frustrated but playful voice telling someone to stop being a pout pout fish, stretching the complaint with an exasperated ugh at the start. The delivery is whiny and teasing rather than genuinely angry, turning a sulky expression into a joke about the children's book character known for his downturned mouth. It lasts just a couple of seconds, which makes the line land like a quick punchline. Viewers instantly read it as a callout for someone overreacting, sulking after losing, or refusing to cheer up.