Boastful 

Donald Trump is nothing if not boastful. He has bragged about everything, including that blonde rug he calls hair! The best way to deal with a bragging boss is to quietly take notes as he boasts about everything from his Ivy League education and his skimming of company funds to his affair with the secretary. And when the time is right, use his claims to leverage a raise or a promotion. 

This takes a lot of patience and good negotiating skills, as you are after all dealing with a shark!