Tennis star Serena Williams guests as a teacher in an episode in which Jay volunteers to direct Kady's kindergarten-class play ("Romeo and Juliet"), and volunteers Michael to help her. But Jay, who has a very competitive side, doesn't want anyone to stand in the way of her "vision." And she treats her charges as though they were army recruits and she was a drill sergeant.

Michael's younger sister, Kelly, drops in for an unexpected visit. Trouble is, Jay can't stand her, and Kelly does nothing during her stay to change Jay's mind.