Actually, when I was living in Saskatchewan in the later 70's and early 80's and Ron Lancaster was coaching the Riders, he had quarterback problems. During one game, his anointed starter was doing very poorly, so about halfway through the third quarter, Lancaster turned to the backup QB and told him to start warming up because he was going in next possession. The guy was feckless enough to say that he didn't feel ready to go in. Lancaster turned several shades of purple and told the guy to get off the sidelines, clean out his locker and be gone before the game was over or he would be killed.