Does This Remind You of Anything?: A conversation between them about Harry not taking his school rivalry with Zacharias seriously sounds an awful lot like an argument from a romantic relationship on the rocks:
Zacharias: "When was the last time you even spoke to me?"
Harry: "Maybe October?"
Zacharias: "Maybe October? *Looks up to sky* Do you see what I have to put up with?"
Harry: "Who are you talking to? Is it me? Because I don't really-"
Zacharias: "Oh, never mind; why are you ignoring me?"
Harry: "It's been awhile so I'm not sure, but didn't we already have the talk about how I can't possibly be ignoring you while I'm talking to you?"
Zacharias: "Yes, we did, but you haven't sought me out in ages!"
Harry: "I have never sought you out."
Zacharias: "And that's another thing!...I shouldn't always be the one who has to do the seeking out. That doesn't really put us on equal footing, does it? It makes it seem like you have better things to do while I don't."
Harry: "Well, when you put it that way-"
Zacharias: "And it's really not fair! Why do you never seek me out? Do you enjoy making me do all the work?"
Harry: "I really don't; why would I seek you out? All you ever do is yell at me that I'm not paying enough attention to you!"
Zacharias: "Well, you're not."
Harry: "I talk to you whenever you're around."
Zacharias: "It's not enough."
Harry: "Fine, I'll play along. Just what do you want from me that I'm not giving you?"
Zacharias: "I want...I want someone who glares at me when he happens to meet my eyes. I want someone who calls me by my last name. I want someone who might hex me in the hallway just because or who I could hex with people thinking I'm an ass. I want someone to laugh at all of my failures and try to downplay my victories so that I might do the same to them. I want someone whose friends I can hate and who will hate all of my friends. I want someone that no one but Snape would think of partnering me with for a project because it will just cause problems. I was a rival. Is that really so much to ask?"
Harry: "I-I guess not, but only if the other party wants that, too, and I'd really hoped you would have understood by now, Zacharias, that that's not what I want." Running Gag: Other characters wondering how Snape manages to make his robes whip around him dramatically when he enters.
- Blaise can't remember the name of his current stepfather. Taken Up to Eleven in the last chapter when this conversation occurs:
Blaise: "Do any of you guys know a Peter? I got a letter this morning saying that he died so, if you do, sorry. Unless you didn't like him in which case, public sorry and private congratulations."
Tracy: "Peter was your stepfather."
Draco: "How much of our conversation were you listening to?"
Tracy: "I don't actually care about your conversation, Draco, I just sensed that Blaise was having trouble keeping track of his various stepfathers again."
Blaise: "Is it that time of year already?"
Pansy: "There is no way that your stepfathers meet you before the wedding."
Blaise: "They don't always meet me afterwards."