Jessica Simpson got a crash course in tuna fish Monday when the endearing dimwit attended a staff meeting at Chicken of the Sea's San Diego headquarters. (Simpson admitted on a recent episode of her MTV hit Newlyweds that she thought Chicken of the Sea was actually made of chicken. Cue laugh track.) "We wanted to bring her down and make sure she understood the difference," says company exec Don George, who kept mum on rumors that Simpson is still trying to find her way out of the building.