How would you handle a "bad" boss who disrespects you and is unprofessional in his dealing with you and yet is well liked by the upper management?

 

Bring the issue to the HR department and ensure that its documented, if it continues take legal actions.

 

this is personal issues,you should write complain to his manager and describe all facts and also try to mention the witness.

Yes . you can handle a bad boss by let him idle on the work. The job he is doing you can share that job and do yourself all the job . one day he will be doing nothing and the company will let him go onthe way to home. You will be the next boss.

Chase him from the organisation ( Evil should be eradicated)

"Discipline and freedom are not mutually exclusive, but mutually dependent because without discipline we would sink into chaos". by Paulo Coelho

So handle your bad boss by discipline

Yes it's really hard to handle.Even we are just subordinates we deserves respect.Especially if he treated you like an idiot.I don't care whatever bad comments he uttered to me.I know my scope of responsibility.He can not terminate me without a valid reason.He is just insecure because he knows that you are much better than him.He will not stay long in that position because he did not value his team.He must realize that without his team he can not fulfill his duty as a manager.He is disgusting.If your manager is like that.Just Chill!Let him eat his own insecurities.He is disgusting.