Chris: (on the phone) So, what are you wearing? (laughs) Wow, I bet you could see right through that. Lois: Chris, who are you talking to? Chris: (to Lois) Grandma.
Later, Peter flashes back to the first time he peed in a toilet. It cross fades to an image of Peter as a child... then pulls out to reveal that it's a photo hanging in the family's living room as Peter runs in, zipping his pants and excitedly telling Lois "I did it!"
Lois: This could be a nice way for you and Stewie to bond. Peter: "Bond"? James Bond. All right, Lois, I'll do it!
Bowdlerize: Two versions of this episode exist. In one, Peter asks a urinating Brian, "Jeez, Brian, where do you think you are? K-Mart?" In the alternate version, which is more commonly seen, K-Mart is replaced with Payless Note (a shoe store).
Brian: He [the therapist], uh thinks I'm in love. Peter: Oh my God! You can talk! (Beat) Brian: Nevermind.
Toilet Training Plot: Peter tries to toilet train Stewie after he thought he'd peed on the rug when it was actually Brian. Also in this episode, there's a cutaway gag where Charles Lindbergh tries to potty-train his six-month-old son, but the baby gets flushed down the toilet, so Charles lies that the boy was kidnapped.
Brian: Lois. Well, she's a fantastic woman. She's compassionate and charming, attractive. Well, stunning really. I guess you could say I really- Therapist: Love her? Brian: No, of course not. Me and Lois? That's sick. Come on, she's my best friend's wife. Look, I love Lois, but I'm not in love with her. Therapist: Mm-hm. Who are you trying to convince, Brian, me or you? Brian: ...Oh, Brian, Brian. What a mess.