Some people refer to the President as Mr. Obama as a subtle way to infer he is ineligible and is usurping the position. I refer to him as Obummer.
Believe me, I've called him WAY worse than that. But neither I, nor you (I assume) works for the guy. You can't have the help calling him Barry, especially while in the White House. It undermines not only Obama personally (which I really don't care about), but it also undermines the Office, which I care about deeply.