World War II. The Cold War. Star Wars. All epic historical conflicts to be sure, but none can match the epicness of the "Grandma NERF Gun Wars!" Holden discovered a bunch of toy NERF guns in his grandma's closet one day and decided to film a few sketches with her, and they blew up on TikTok. This isn't the first time Holden and his grandma have had a standoff. Remember when we brought you their last viral video?