duddlehead
Young celebrity or quasi-celebrity or reality star who is completely devoid of any talent yet somehow obtains a position as a judge, commentator, talking head, or persona of authority on a television show or interview. Of questionable moral character yet delivers useless, anecdotal advice.
Demi Lovato (as a Judge on the X Factor)
Snooki
With Britney Spears and Demi Lovato, the X Factor should be called "Simon and the Duddleheads"
Snooki
With Britney Spears and Demi Lovato, the X Factor should be called "Simon and the Duddleheads"