who were never good enough after high school to do anything but get a shitty job and, if lucky, to get to coach a sport for high school. Those bosses will be the obnoxious assholes who think motivational speeches, posters, and a "110% attitude" are all that are needed, while he diddles his secretary, defines himself by his possessions, crawls into alcoholism (and not even with top shelf alcohol; most likely cheap beer or blended scotch), and eventually kills himself because his life has had no meaning since he was the 9th grade football hero, he has three bitch daughters who are obsessed about material things, his wife has big hair and thinks "Pampered Chef" parties are high class, and the only that he has to live for is that 30 year old photo of him on the JV football team in 8th grade that got printed in the newspaper, even though his name wasn't mentioned.
Your son needs to learn how to deal with those fucknobs, because he will encounter far too many in his lifetime. Best that he learn now that he can laugh at them and play their games and always win because he's smarter, better, more mature, and isn't a fucking loser.
Hopefully, though, your son will be able (if he's into business) go into a legitimate business at the executive level and avoid exposure to all the mid- and tertiary-level management losers that are drawn from high school football stock and military enlisted (not officer) asswipes.
Maybe tell your son something like "Look at that jackass - that's all the incentive you need to do really well in school. So you can catapult yourself above them in the management heirarchy at whatever business you get into and never have to deal with their insufferable, classless ilk again".