Dumb people are dumb, and they deserve patience and eventually a slap in the head.
I worked in a restaurant a while back and my entire day was filled with fellow employees and customers who would fit right in with your boss.
I would just go sit in the fridge for a while and eat pickles from a five gallon pail when I was getting to the point where I was going to strangle someone due to their stupidity.
I am assuming you don't have a walk in fridge or five gallons of pickles, so you may have to discover your own cool off zone to disappear to when murder is afoot.