Sharon Osbourne Dishes on Piers Morgan and Howard Stern

"America's Got Talent" judge Sharon Osbourne chatted with "Extra's" Terri Seymour at The Grove about the show's new judge, Howard Stern, and her recent Twitter feud with Piers Morgan over Madonna's Super Bowl halftime performance.

Osbourne tweeted that she thought Madonna was a queen, to which Morgan replied on Twitter, "Queen of what? Lip-synching?"

Sharon said, "He is such a miserable old Englishman. He needs a good kick in the backside. And I'm the person to do it."

As for Stern taking Piers' place on "America's Got Talent," Osbourne doesn't know what to expect. "I have no idea what kind of judge Howard is going to be -- but if he gets out of line, I'm going to put him in his place... with my foot in his a**!"

In the meantime, Osbourne is gearing up to play host for the 14th Annual Grammy Foundation Music Preservation Project concert Thursday. "It's so important, especially if you want to be a musician; you have to know your roots."

For more information on the Grammy Foundation Music Preservation Project, visit the official website! And catch the 2012 Grammys, Sunday on CBS!