S04E08 - Operation: C.A.K.E.D.-F.O.U.R.
Synopsis
Children's Annual Kompetition Exposes Devilishly – Fiendish Operation Up River: When the Delightful Children promise their birthday cake to the winner of the Tubathon, everyone is raring to go, especially Numbuh 2. With his old tube Betsy, and his "Farfegtubing", will Numbuh 2's dreams come true? Or do the Delightful Children have other plans?