The sound circulates online attributed to CasperSight, a creator whose reaction clips are widely clipped for soundboards. The phrase itself is a vulgar intensifier of surprise, combining holy shit with balls for extra emphasis, which explains why it feels bigger than an oh my god, wow reaction used in similar edits. Short reaction shouts like this spread because they are instantly understandable, easy to drop over any footage, and work without setup. It remains popular for gaming, sports and meme edits where a normal gasp would sound too mild for the moment.