NHL Referee Yells Profanities on Hot Mic Before Announcing Penalty

Live microphones can quickly ruin a career, whether you're a reporter or performer or just have a microphone anywhere near you. It's a general rule of thumb that if you're holding a mic, expect that it's on.

Frederick L'Ecuyer was caught dropping multiple f-bombs while officiating for the Blue Jackets-Predators game. He had stopped to announce a penalty, but instead swore out a player while his mic was hot.