During Meg's 17th birthday party, Peter (dressed as a clown) accidentally kills his Bible-thumping father, Francis, and, after quitting beer for crack cocaine, visits Bruce the hypnotist and discovers that Francis isn't his biological father. Meanwhile, Stewie begins acting bratty and Lois swatting him on the butt leads to Stewie wanting more abuse.
This episode contains examples of:
- Addiction Displacement: Peter tries to overcome his alcoholism by replacing it with crack. Brian even states that it's not a good substitute.
- And There Was Much Rejoicing: After Francis dies, Lois and Brian are respectful among the rest of the family, but they step outside and party.
- Bait-and-Switch: Brian asks Peter where he got crack:Peter: From Blacks.
Brian: (appalled) What?!
Peter: Yeah, right behind Black's Hardware Store. There's a white guy selling it.
- A Birthday, Not a Break: Though it's not really commented upon, Francis dies during Meg's 17th birthday party.
- Bratty Half-Pint: Stewie at the beginning.
- Calling the Old Man Out: Meg gets mad and yells at both her parents when they try to ask her 'how old she is' and calls them out on their negligence and sheer stupidity and the fact that didn't know her age or that today was her birthday nor did they even bother to take in consideration of her personal well-being.
- Came Back Wrong: Peter tries burying Francis in the Pet Sematary. Francis immediately bursts out of the grave, screaming. After beating him back down with a shovel, Peter says he'll bury him in a regular cemetery.
- Even the Subtitler Is Stumped: Mickey, just before he passes out during the drinking contest. The subtitles just read "??????".
- Generation Xerox: Peter's real father is a fat, stupid drunk whose best friend is an intelligent, snarky animal.
- Glorified Sperm Donor: Mickey. He has a one-night stand with Thelma (implied to be a drunken one, given his alcoholic nature) and leaves, probably not even knowing that he impregnated her.
- Heel Realization: Stewie admits he has problems about wanting to be hit by Lois.
- I Am Not Your Father: The repressed memory from Peter's childhood.Young Peter: Happy Father's Day, Dad!
Francis: I'm not your father!
- Identical Father: Mickey McFinnigan looks a lot like Peter (which explains why he's Peter's biological father rather than Francis).
- Ironic Echo Cut: After Peter blames alcohol for the death of Francis, Peter vows never to drink again. Cut to Peter smoking crack as a substitute.
- Killed Off for Real: Francis.
- My God, What Have I Done?: Lois when she hits Stewie for breaking her necklace.
- National Stereotypes:Peter: This is quite a country, Brian. You know, Ireland has more drunks per capita than people.
Brian: That's a negative stereotype. I don't think the Irish drink as much as people say they do.
[the plane touches down in Ireland, and the runway is covered in beer bottles]
- Precision F-Strike: When Brian learns that Peter started doing crack: "What the fuck?!"
- Reality Ensues: Stewie may be a megalomaniac evil genius, but he's still a one-year-old baby, as evidenced by his "Mine!" phase, and cries hysterically when he gets spanked for misbehaving.
- Same Content, Different Rating: When this episode first aired on [adult swim], it was rated TV-MA (possibly because of the Imagine Spot of a muscular Lois beating up Stewie and Stewie being put on the rack and sexually tortured). On FOX and later airings on [adult swim], the episode was TV-14 for suggestive dialogue (D), sexual situations (S), and violence (V).
- Self-Serving Memory: Lois slapped Stewie on the butt once after he threw a fit and deliberately broke her necklace. However, when talking to Rupert, Stewie remembers the incident as him apologizing for accidentally breaking the necklace and then a muscle-bound Lois viciously beating him.
- Lois sings (or at least attempts to sing) "You are Sixteen, Going on Seventeen" (but can't sing it as she doesn't know Meg's age).
- During Stewie's Imagine Spot about being beaten by Lois, he screams "I love you, Mommie Dearest!"
- Francis appears as a ghost along with the ghosts of Anakin Skywalker, Obi-Wan Kenobi, and Yoda.
- The title is a reference to the book Heather Has Two Mommies.
- Skewed Priorities: Peter justifies taking up crack by saying that at least it's not beer.
- Status Quo Is God: Peter and Lois neglect to learn about Meg's birthday and age and she calls them out on it. After she leaves, obviously Peter and Lois don't learn anything from this.
- Take That!: To Failure to Launch. Peter insists he's tough, because he made it through half of the movie.Tripp: I just never managed to get my life together. Isn't that hilarious?
Paula: You're cute!
Peter: (stands up) DONE. (walks out)
- Too Kinky to Torture: Stewie gradually becomes this after being hit by Lois.Stewie: Well, you know what'll ease your stress? Slap me across the face like a bitch!
Lois: It's all right. I'll get some windex.
Stewie: Come on! Discipline me! Make me wear panties, rub dirt in my eye, violating me with a wine bottle— my God, I really do have problems, don't I?
- Was Too Hard on Him: Lois really regretted spanking Stewie.