The slap comes from Scrap Brawl, a fighting game where quick exaggerated hits are part of the action, and this isolated crack was clipped and shared online as a standalone effect. Short game sounds like this spread easily because they can be dropped into any video without context, and the slap works for both literal fights and metaphorical put downs. It remains popular with editors who need an instant, recognisable hit that does not need a build up or a long sound tail to land.