In HS, there was a REAL loudmouth, Jean-Claude I think his name was, who p-o'd a real tough quiet guy, Carl. Carl finally got fed up with him and challenged him to meet him in an arena lot off school property after school.
He showed up, and Carl, who knew how to fight and knew this guy was no challenge, decided to 'play' with him. He danced around Jean Claude, just out of reach, and 'smacked' his face over and over again for about 30 mins. Never drew blood, never really hurt him, and never let him even come close to getting a shot in. Wore him right down until he gave up, and let him leave.
Jean Claude didn't look THAT bad leaving the fight, BUT the next day, his face was NOTHING but one big purple and blue bruise. That guy didn't mouth off about many people after that.....