The word kapow comes from mid-century American comic books, where artists lettered impact sounds directly onto panels to show punches landing. The 1960s Batman television series made those words famous on screen, flashing KAPOW and similar effects in bright colours during fight scenes. That visual language later became shorthand online for any exaggerated hit. Short recorded versions like this one spread through meme soundboards and video edits, where creators reuse the familiar comic punch sound instead of recording their own impact effects for jokes and cartoons.