psycho button--when you accidentally or intentionally touch the one thing that will make an easygoing stagehand go berserk. Often, the relationship is never the same or completely destroyed. "I pushed his psycho button and he never spoke to me again."
Bossitis (noun): When an extra man or extra woman is temporarily elevated to the head's position and let's the hubris go to his or her head, making questionable, imperious decisions.