China, IL

Professor Cakes (Jeffrey Tambor) knows how to give one helluva backhanded compliment.

In this exclusive clip from Sunday's China, IL, Professor Cakes doesn't hold back when he tells Frank (Brad Neely) he's "the wooorst communicator to young people that I have ever seen."

25 totally unnecessary spin-offs

But that's not all, folks! After knocking him down, Professor Cakes is ready to help build Frank up again — as the human guinea pig of his new invention which will allegedly help his vocab appeal to the twentysomething students.

Something tells us this isn't going to go well...

Watch the exclusive clip below.

China, IL airs at 11:30/10:30c on Cartoon Network.