The pew pew sound is one of the oldest pieces of internet sound shorthand, standing in for laser guns long before soundboards existed. It mimics the bright zap of retro cartoon ray guns, and because anyone can voice it, it spread through playground games, comedy sketches and early online videos. On soundboards it became a go-to gag effect for fake action, appearing in meme edits, gaming clips and reaction videos. Its staying power comes from simplicity: three quick syllables that instantly read as playful shooting in any language.