In this episode, Jack Donaghy (Alec Baldwin) considers running for mayor of New York City after he is mugged on his way to work; Liz Lemon (Tina Fey) becomes frustrated by increasing disorderly behaviour on the subway, so she decides to get in on it by imitating a mentally ill elderly woman to scare people away; and Jenna Maroney (Jane Krakowski) and boyfriend Paul (Will Forte) consider living normally as a couple as a potential new fetish, but become concerned that they are in fact simply settling down.
On her way to work, Liz Lemon (Tina Fey) is delayed by what she perceives to be the failure of other subway goers to observe basic social norms.
To her amazement, she discovers that the getup causes people to avoid her on the subway, as they fear that she is sick and potentially mentally ill. Liz concludes that society rewards rulebreaking and anti-social behavior, so she escalates her imitation of an insane old woman to get more personal space in her day-to-day errands.
When the crowd reacts positively to his apparent conquest of the old woman that had been terrorizing the subway, both Jack and Liz come to realize that New Yorkers do cheer those that uphold order after all.
[1] A 2020 review of the best 30 Rock episodes by Caroline Framke of Variety ranked this third for letting "Fey unleash Liz at her least ashamed, culminating in a dramatic standoff between her and Jack in which she goes full Joker while coughing up a lung and a half".
[4] A flashback gag of Steve Buscemi's character Lenny Wosniak appearing undercover as an unconvincing high-schooler greeting "How do you do, fellow kids?"