Don's weekend with the kids is awkward, not least because Sally hasn't adjusted to a woman who's not her mother sharing a bed with her father. She and Bobby wish him a happy birthday because when his birthday actually comes they'll be with their Betty and Henry. Megan, as it turns out, is planning a surprise birthday party for Don's fortieth birthday note . The surprise is spoiled seconds ahead of time by Roger and Jane Sterling, who are arguing in the hallway when the Drapers return home. The party is an awkward affair and Megan is one of the few people who has a good time, partly through her slinky performance of "Zou Bisou Bisou". After the party it's obvious that Don is especially unhappy about it, as he shuts down her attempts to get amorous by going to sleep early. The next day she feels ill — mostly free-floating anger — and goes home early. When Don follows her he finds her cleaning house in her bra and panties. They fight, then make love, then he assures her that whatever problems she's noticed with their coworkers existed a long time before she arrived at SCDP.
Pete arranges a meeting with Mohawk Airlines, an account he feels he can reel back in. He's less than pleased to see that Roger's arrived at the restaurant before him, and is already half in the bag by that point, having sneaked a peek at Pete's calendar while chatting up his secretary Clara. Pete's pride leads him to demand a bigger office, preferably Roger's. Roger is unwilling to consider that idea, but through a mixture of cajoling, threats, and bribery he convinces Harry to trade offices with Pete.
Joan is going through her paces as a new mother, with baby Kevin keeping her up at nights. While Greg is still away, her mother Gail Holloway stays with her to help her with the baby. And to get inside her head. But while Mrs. Holloway tries to convince Joan that she no longer has a future at SCDP, Joan goes in the opposite direction and arranges to return to work in three weeks.
This episode contains examples of:
- Afraid to Hold the Baby: Downplayed; quite a few of the characters seem nervous about holding baby Kevin when Joan visits the office, but they're happy to see him (or rather, happy to see his mother). Peggy is noticeably uncomfortable since she gave up her own baby.
- Batman Gambit: After he figures out that Roger is reading his calendar so he can steal his thunder at scheduled meetings, Pete has Clara pencil in a nonexistent early-morning meeting on Staten Island. A few scenes later, Roger is seen getting up very early and explaining to a barely-awake Jane that he has to go to Staten Island.
- The Bus Came Back: Bert has evidently reconsidered his resignation, although there's no explanation as to what made him change his mind.
- Call-Back: A couple.
- In "Tomorrowland", Joan predicted that Megan would be promoted to copywriter because Don wouldn't want his wife to remain as a secretary. Guess what? Megan's now a copywriter! (This is not pure nepotism; Megan is shown to have a flair for the work.)
- It's clear from conversations between Don and Megan that he's told her some details about his past identity, having clearly learned from the events of "The Gypsy and the Hobo" (in which Betty had to force the truth from him, with disastrous consequences for their marriage) and taken Faye's advice from "Tomorrowland" (that he should tell other people the truth about himself) to heart.
- Cassandra Truth: When Megan's inviting people to Don's surprise birthday party, Peggy tries to warn her that it's a bad idea, as Don — like most men — doesn't like surprises. Megan goes on ahead regardless — and Don's horrified when he realises what's happening. To her credit, Peggy refrains from saying "I told you so".
- Didn't Think This Through: Roger's trolling newspaper ad about Sterling Cooper being equal opportunity employers is only meant to needle their rivals, not actually get them black job applicants.
- Double Meaning: Roger, upon seeing that Joan and baby Kevin in the office, greets them with "Well, well, well. There's my baby," before quickly adding, "Now move that brat out of the way so I can see her." Only Joan and Roger would know that Roger is actually Kevin's father.
- Dramatic Irony: Roger's joke ad and the "late" invitation to Don's surprise party all spur Gail Holloway to plant seeds of doubt that Joan may have been fired from her job. Joan is initially dismissive of all of this but is rattled enough to cut her maternity leave short by three weeks to go to the office. Lane assures her that she's not being fired.
- Every Man Has His Price: $1,100 in cash (around $10,000 today) is enough to persuade Harry to swap offices with Pete, although asking if this is going to be a monthly thing rather than a one-off was probably not the best move.
- Everyone Has Standards: Roger's mocking of Megan's "Zou Bisou Bisou" number does not go down well with Don, who reminds him that remarks about wives are strictly off-limits.
- Friendship Moment: The depth of Lane and Joan's friendship is further explored here when she returns to the office after seeing Roger's ad about SCDP. He assures her that she's not being fired, that the ad was a joke, and that SCDP would completely fold without her. When she starts crying, he gives her his pocket-square. He even tries to cheer her up by recounting what happened at Don's party, although he admits he can't do Megan's "Zou Bisou Bisou" number justice.
- Kick the Dog: Three executives over at Young & Rubicam drop water bombs on civil rights protesters marching in front of the building; Truth in Television, as this incident really happened.
- Ms. Fanservice: Megan, so very much. There are a couple of shots of her topless from the back, she shows plenty of leg during the "Zou Bisou Bisou" number, and she cleans the apartment in her underwear.
- Multi-Part Episode: Officially, this is the first two episodes of Season 5 and the 53rd and 54th episodes overall. On the DVD it plays as a single movie-length episode, while on some subscription services it's available as two separate episodes, "A Little Kiss, Part 1" and "A Little Kiss, Part 2".
- My Beloved Smother: Gail Holloway seems to have a lot of experience bending Joan to her will, although ultimately it's not working as well as it used to.Gail: You know, you're not exactly at your fighting weight.Joan: Try me.
- Never My Fault: Harry punches Stan in the arm for not warning him about Megan being behind him, even though he did, but Harry chose not to listen.
- One Dialogue, Two Conversations: Between Roger and Harry. Roger wants to get Harry to change offices with Pete, while Harry thinks he's in big trouble — possibly of the sackable offence kind — for his comments about Megan. The latter is cleared up when Roger reveals that he too has made comments about Megan (although he merely mocked the "Zou Bisou Bisou" number in front of Don), while the former is resolved by way of the $1,100 in cash that Roger happens to have with him, combined with a threat which lampshades this trope.Roger: Do you want to go back to the conversation you thought we were having?
- Only Sane Man: When everyone else is worried that the lobby is full of black people looking to work for SCDP (the direct result of Roger's ad, which he meant as a joke), Lane steps up to this role. He calmly tells everyone that SCDP is currently only looking to recruit secretaries (meaning that, since this is the 1960s, there are no vacancies for any of the men) and that all of the women looking for secretarial work should just form an orderly queue to hand over their resumés, following which the company will be in touch.
- Real Life Writes the Plot: The opening scene — in which executives from a rival agency are caught dropping water-bombs on civil rights protesters — is a recreation of an actual event. It was reported in the May 28, 1966 edition of the New York Times; the article was found by the show's researchers and passed to Matthew Weiner, who decided to use it for the season opener. The "and they call us savages" line is actually a quote from the article.
- Right Behind Me: Megan stands behind Harry as he details all the perverted things he would do to her. Stan's warning, seen as a joke, goes unheeded...Harry: I would've just stood up and grabbed her little French behind and pushed her through those cheap-post-four-walls.Stan: Hi, Megan.Harry: Very funny. God, what I would do to her...
- Slap-Slap-Kiss: The final scene between Don and Megan plays out like this.
- Troll: Roger runs an ad in the New York Times touting the agency as an equal opportunity place to work. In this he means to troll Young & Rubicam over the water-bombing incident (see the entries for Kick the Dog and Real Life Writes the Plot). It bites him in the ass when the lobby is filled with potential applicants ... all of whom are black.
- Toilet Humor: Baby Kevin farts in Lane's arm when Joan lets him hold him.
- What Could Have Been: In-universe, this is clearly what Pete's thinking when he sees Peggy with baby Kevin's pram.
