The opposite of a Genius Ditz, a character who seems competent at everything... except his actual job. A sort of adult Book Dumb, the main question on everybody's minds, in- or out-of-universe, is "How on earth did this guy get hired, especially given there are other jobs he'd be far more competent at!?" (Though sometimes his Blue Blood may give you a reason to suspect nepotism.) Like the Pointy-Haired Boss, may be a result of The Peter Principle; he's been promoted from a position he mastered to one he has not. If they also have Blue Blood, they are very likely to be an Upper Class Wit.