30 Rock: The Shower Principle

"The Shower Principle" is the fourteenth episode of season six of the comedy series 30 Rock and the 85th episode of the series overall. It was directed by Beth McCarthy-Miller and written by Robert Carlock and Tina Fey. It first aired on Thursday, March 29th, 2012. In this episode, Liz Lemon is miffed that nobody remembers her 40th birthday. Tracy Jordan thinks it would be very funny if he were to break character on TGS with Tracy Jordan. Meanwhile, Jack Donaghy continues to resent his promise to quit drinking during Avery's pregnancy.