America's Got Talent judge Howard Stern is voicing his opinion on how he believes Britney Spears will do as a judge on The X Factor.

During a NYC press conference promoting AGT, Stern said he believes Britney "still thinks the earth is flat."

The shock jock, who admits to wanting to watch to "see what kind of train wreck she is," goes on to say:

    "I think we're going to tune in to see her, to see if she can function through the thing. As far as any real criticism, I think Simon Cowell and L.A. Reid will do that ... I think Britney will sit there and eat a lollipop and wear a sexy outfit."

Spears closed the deal yesterday earning a reported $16 million to be a judge on the Fox show for one season.