According to the clip's original listing, this is Al Jourgensen, the frontman of industrial metal band Ministry, captured circa 1996. The band was deep into its aggressive industrial-metal peak then, and the yell fits that era's confrontational onstage bark. Lifted from its original context and uploaded to meme soundboards, the one-second shout took on a second life as a motivational gag — a rock-star command that creators pair with dares, workouts and bad decisions. It endures because the voice is unmistakable and the line needs no setup.