Brandy & Mr. Whiskers - Season 1 Episode 13 Skin of Eeeeeeeevill!!! Bling-Bling. Ding-a-Ling.
Overview: Brandy and Whiskers see a relationship therapist, Whiskers takes an exercise too far and pretends that he's Brandy, and vice versa. Everybody thinks this, except Brandy. In the end, Whiskers is back to his old self.