Audio problem: When they start to sing the favorite food song, you can obviously tell they are lip syncing. If you look right when the kid starts filming them with his cell phone, you can hear Tori singing but her lips aren't moving.
Tori is on her laptop in the plane while sitting next to Trina. When she goes onto her video chat profile, there is a list of usernames of people online. One name is DanWarp, which is the website name of the show's creator, Dan Schneider.