Probably the riskiest experience I dealt with over the years was one position where I worked for a manager with a huge ego and small experience.  One day while I was working through a fairly serious technical issue that was holding up production our IT manager was hovering and distracting which was bad enough to deal with, but he finally blustered 'Well, it can't be THAT hard to fix!'.  I turned around from the work and responded 'Well, if it is so freakin' easy, why don't you fix it yourself?'.

That got me a session with the company owner and his sons.  But later on, the manager was, in fact, dismissed due to chronic alcoholism.