The sound comes from Metal Gear Solid 3: Snake Eater, released in 2004, where the young Revolver Ocelot makes a cat-like call to summon the Ocelot Unit. The odd moment became a favourite clip among Metal Gear fans and was shared on forums, YouTube edits, and soundboards as a short meme sound. Its popularity lasts because the meow captures Ocelot's eccentric personality in one second, making it recognisable even without video for players who know the series and its stealth scenes well.