File:Billie's not so cheerful anymore.jpg

After Team Austin finds out that the perky and cheerful brother and sister musical duo "Billie and Bobbie" had sabotaged the A&A Music Factory as well as their friendships in order to get them shut down so they can open their own music school called "The B & B Music Factory," Austin and Dez work their own sabotage by claiming Billie's sister thinks she's a better performer which immediately breaks his perky demeanor, in the episode "Duos & Deception." Swiped from my iTunes copy.