If you find yourself searching "what should I do if my boss makes politically incorrect comments," you can say something directly to him to gauge his reaction or tell a trusted colleague on the same peer level as your boss so someone knows in case there is retaliation. For those wondering "is it considered harassment if my boss makes offensive comments that are not directed at me," yes, these types of comments are definitely classed as bullying and harassment even if they are not aimed at you. When asking "why do I feel constantly on edge around a boss with erratic moods," you are experiencing an emotional disturbance called hypervigilance, which causes emotional whiplash because you do not know what to predict day in and day out. If you are asking "how do I make things more consistent with a boss who has different reactions to the same behavior," keep asking for clarity in a separate meeting and put your plans in writing to confirm what you are going to do before you do it. Finally, to answer "what is the best way to protect myself from an unpredictable boss," you must document everything by sending an email to a trusted teammate to corroborate your story if you decide to escalate this.