Juanita ( Madison de la Garza) proves that the apple doesn't fall far from the tree when she gets expelled from school for language -- and Gaby (Eva Longoria Parker) cusses out the principal when she and Carlos ( Ricardo Antonio Chavira) have a meeting to discuss Juanita's use of a four-letter word.

"You couldn't wait until September to cuss out the principal?" accuses Carlos, who is having zero luck getting his daughter into a private school.

Gabby defends herself, insisting that the principal attacked Juanita, but she is not so righteous when she discovers Carlos' Plan B: Juanita will have to be home schooled!

The revelation leads the couple into a "blankety-blank' swearing competition.

Also, on Sunday night's "Don't Walk on the Grass" episode, Bree (Marcia Cross) begins to fall for Karl (Richard Burgi), when he proposes marriage, and drifts further from Orson (Kyle MacLachlan); Katherine (Dana Delany) continues her sad attempts at seducing Mike (James Denton), as her "crazy" conflict with Susan (Teri Hatcher) grows; and Lynette (Felicity Huffman) learns Tom (Doug Savant) is cheating on his mid-term.

"Desperate Housewives" airs Sundays at 9 p.m. on ABC.