Trivia: Aunt Syl shows up again in Season 3's "The One with the Dollhouse" wherein she dies and bequeaths Monica her dollhouse (which somewhat makes up for the cancelled lasagnas). She's also mentioned in Season 2's "The One Where Old Yeller Dies": Chandler is sporting a mustache to look more like Richard and Monica asides to Ross, "With that mustache, doesn't Chandler remind you of Aunt Sylvia?"
Factual Error: Monica tells her Aunt Syl that in the lasagnas, the meat is only every third layer. In lasagna, it is every fourth layer. There is one layer of lasagna noodles, one of Ricotta mixture, one of meat sauce and one of grated mozzarella, repeating.
Continuity: In this episode Phoebe says she never lies, yet in "The One With Rachel's Other Sister", Phoebe is an excellent liar and is even teaching Joey how to lie.
Trivia: In this episode Ross does not want to know the sex of his baby, but Rachel accidentally lets it slip. In "The One Where Chandler Takes a Bath", Rachel does not want to know the sex of her baby, and Ross mistakenly lets it slip.
Goof: When Rachel and Phoebe are talking about what a pig Paolo is, Rachel grabs the paper towels, pulls them across the kitchen, and then sits down while holding them. The camera angle then changes to Phoebe talking. When it cuts back to Rachel, the paper towel roll is untouched and Rachel is holding nothing. When we cut back to her later in the scene, she is once again holding the paper towels.
Trivia: Once Monica sees the new foosball table, she asks the guys where they are going to eat. Although Joey's response was "at the sink", we see in later episodes that the guys place a clear plastic sheet over the top of the table. This allows them to use it as a real table and still be able to see the game.
Goof: In the tag scene Monica's winning foosball goal was made with a blue player. However if you look at where she is standing, she is the red team. The exact clip of her winning goal from earlier in the episode when she and Ross were the blue team, was inserted there.
Trivia: This is the first episode to mention Phoebe's career as a masseuse.
Continuity: The apartment numbers in this episode are 4 and 5 again. In the episodes before and after this episode, the numbers are 19 and 20. This must be another episode that was aired out of sequence.
Continuity: Monica's aunt didn't want the lasagnas because they weren't vegetarian. Although Phoebe is a vegetarian, she is sitting at the table helping Monica finish one of the lasagnas near the end of the episode.
Continuity: Chandler had a roommate named Kip before Joey moved in with him. Chandler says Kip ran off and got married, but in Season 5's "The One With the Kips", we hear that Kip was phased out.
Monica: Aunt Syl, stop yelling! All I'm saying is that if you had told me vegetarian lasagna, I would have made vegetarian lasagna! (listens briefly) Well, the meat's only every third layer, maybe you could scrape.
Phoebe: Ooh, this is cool... It says in some parts of the world, people actually eat the placenta.
Chandler: And we're done with the yogurt.
Monica: (talking on the phone) What am I supposed to do with a dozen lasagnas? (gasps) Nice talk, Aunt Syl. Do you kiss Uncle Freddy with that mouth?
Joey: (impersonating Ross's tiny unborn fetus) How come you don't live with Mommy? How come Mommy lives with that other lady? What's a lesbian?
Ross: (about Rachel and Paolo) What am I supposed to do, huh? Call immigration? (pauses, looks suddenly inspired) I could call immigration!
(Joey throws his keys onto the table, which promptly collapses)
Joey: We need a new table
Chandler: Ya think?
Ross: (looking at one of Carol's photos) When did you and Susan meet Huey Lewis?
Carol: That's our friend Tanya.
Chandler: Well, I believe the piece of furniture was fine, until your little breakfast adventure with Angela Delvecchio
Joey: You knew about that?
Chandler: Well, let's just say the impressions you made in the butter left little to the imagination.
Chandler: (about splitting the cost of a kitchen table) You think we're ready for something like that?
Joey: Why not?
Chandler: Well, it's a pretty big commitment, I mean, what if one of us wants to move out?
Joey: Why, are you moving out?
Chandler: I'm not moving out.
Joey: You'd tell me if you were moving out, right?
Chandler: Yeah, yeah, it's just that with my last roommate Kip...
Joey: Aw, I know all about Kip!
Chandler: It's just that we bought a hibachi together, and then he ran off and got married, and things got pretty ugly.
Joey: Well, let me ask you something, was Kip a better roommate than me?
Chandler: Aw, don't do that.
Rachel: (to Ross, about the sex of his unborn child) I can't believe you don't want to know. I mean, I couldn't not know, I mean, if, if the doctor knows, and Carol knows, and Susan knows....
Monica: ...and Monica knows.
Ross: What? Hey, how could you know? I don't even know!
Monica: Carol called me to thank me for the lasagna, I asked, she told me.
Joey: (secretively to Monica) So what's it gonna be?
(Monica whispers in Joey's ear and Ross waves frantically in protest)
Ross: Wait, oh, hey, huh! Oh, great! Now he knows, and I don't know?!
Monica: I'm sorry, I'm just excited about being an aunt!
Joey: ...or an uncle.
Monica: What's the matter?
Phoebe: Nothing. I'm sorry. I'm just out of sorts.
Chandler: Well, you can use some of my sorts... I rarely use them.
Phoebe: Alright, you know Paolo...?
Ross: I'm familiar with his work... Yes...
(Joey and Chandler are in a furniture store picking out a new kitchen table)
Joey: (gesturing) Here! How 'bout that one?
Chandler: That's patio furniture.
Joey: So what? Like, people are gonna come in and think, "Uh-oh, I'm outside again".
Rachel: (about Phoebe's "the best" oatmeal-raisin cookies) Oh, my God! Why have I never tasted these before?
Phoebe: Oh, I don't make them a lot, because I don't think it's fair to the other cookies.
(After Ross and Monica trash Joey and Chandler at Foosball and Monica leaves)
Ross: Well, looks like we kicked your butts.
Joey: No-no... She kicked our butts. You could be on the Olympic standin'-there team.
International Episode Title:
Czech Republic: Holka, nebo kluk (Girl or Boy)
This episode runs 23:44 on DVD (a typical sitcom runs about 22:00).
Joey: She's got to know that you're everything he's not. You're like, like the anti-Paolo.
Chandler: My Catholic friend is right.
Anti-Paolo was clearly a reference to the term Antichrist. Antichrist, translated from ancient Greek, literally means "opposite of Christ".
The song that the gang sings in Central Perk in the opening scene is The Odd Couple theme song.
The song that Ross tries to sing just after they finish The Odd Couple theme is the I Dream of Jeanie theme.
Ross: Hey, when did you and Susan meet Huey Lewis?
Huey Lewis is a musician and singer. He sings lead vocals and plays harmonica for his band Huey Lewis & the News, a rock group based in San Francisco, California that was particularly popular during the 1980s.
Rachel: I mean, we are way past the fling thing, I mean, I am feeling things that I've only read about in Danielle Steele books, you know?
Danielle Steele is a well known romance novelist.