Titus' mom, a diagnosed manic-depressive schizophrenic, surprises Titus and Erin by showing up uninvited. Titus is immediately suspicious and tells Erin to follow the "drill" that they've practiced for just this occasion. After a little bonding with Titus' mom, Juanita, Erin thinks Titus is overreacting. Luckily, Tommy and Dave - who did follow the drill - have arrived as backup. It only takes a few moments, and some yummy home-cooked yams, to convince Tommy and Dave that Juanita is cured. Tommy is satisfied that her medication is powerful enough to control her violent outbursts. Titus can't believe how gullible everyone is! Finally, Ken arrives and seems to agree that Juanita will always be a psycho regardless of drug therapy. Then, he sees her and within minutes they're making out in the kitchen. After Titus and his mom have a heart-to-heart, everything seems to be okay. However, soon after a big dinner, the groggy group discovers that Juanita dumped her medicine into the gravy!