Editor's note: This story contains mature content.
On a September morning in Los Angeles, one of the internet's most popular entertainers is not in the mood to entertain. He's not here for the jokes and antics that have defined his YouTube career, Logan Paul says into a camera, his blond hair cut short, his fingers each adorned with a silver ring. This year, he insists, he's a boxer first.
But when he walks onto the stage near Staples Center, sunglasses on, biceps peeking out from the sleeves of his flamboyant silk shirt, it quickly becomes clear what kind of mood Paul is in.