A combination of president and dumbass. Though the usage is decidedly partisan when I say it, it could apply to any president.
Also: presidiot, presidolt, presidimwit, presidunce
I barely survived four years of the presidumbass, and now I get to struggle through four more.
A derogatory, yet creative name for Our PRESIDENT George Bush. This is yet another of the dozens of names that liberal kids and Democraps use against Bush because they are only capable of insulting someone and are jealous because they lost the election AGAIN.
Don't be such a presidumbass, Bill Clinton.