Constantly having to deal with irrational and poorly thought-out arguments from your manager? Your Logical Fallacy Is sums up some of the most common flaws in reasoning.
Constantly pointing out your boss' flaws admittedly might be a career-limiting move (CLM), but the site is a useful resource in other ways too. Many of these flaws are also found in online comments, where straw man arguments, slippery slope claims and anecdotal evidence abound. It's well worth clicking through the full set of ideas discussed on the site; you can even order a poster version if you want a permanent reminder.