Frank's mom comes to town to see Lilly. She tells Carol how to do everything. While everyone else is enjoying ""Nana,"" Carol grows more and more frustrated with her as her advice becomes more and more personal. Finally because of some advice from Carol (and Cody), Frank stands up to his mother. Then Frank's mother realizes what a terrible mother-in-law she has been.
At the same time, JT gets a job as a dummy for a women's self-defense class. Dana, Karen, and Al join the class and after seeing what it is there practicing (shots to the groin) JT quits in the middle.
Also, Cody gets a job doing brain experimentation.
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Ready to Watch Step by Step, Season 5, Episode 14?