Speaking of which, Squall has several standard move patterns for his Limit Break (with varying numbers of trigger-for-bonus-damage spots) amongst which the game chooses randomly, with some important bosses getting unique ones. The Jumbo Cactuar has this.
Anytime there's dialogue selection in the Laguna flashbacks, there's always an extra option that's shaded in to indicate Squall's reaction to the scene. If you select that, Laguna will react with confusion to "hearing" Squall, which he later associates with hearing "faeries". Made even funnier with the first mind-travel, in which you can select this option repeatedly in a row. Laguna starts talking to himself, baffling everyone around him, until he finally shouts "stop it!".
An early exchange between Seifer and Quistis.
Quistis: Good luck.
Seifer: Instructor... I hate it when people wish me luck. Save those words for a bad student that needs them, eh?
Seifer: [to his lackeys] Add Instructor Trepe to the list.
Blink and you miss it, but just before she says "Good luck, Seifer," Quistis does an incredibly sassy diva head-turn that clearly expresses what she's thinking.
When Seifer, Squall and Zell are on standby in Dollet, there's a stray dog in the square with them. As Seifer becomes more and more bored and the dog whines for attention, Seifer has a breakdown and asks if this is some sort of dog-training.
If you chose to walk the long way round the cliff to the Dollet communication tower instead of following Selphie jumping straight down the cliff, there's a brief moment with Zell aping one of Selphie's poses, hopping in place with his arms in the air.
Even funnier than that is the exchange of dialogue that has both Squall and Selphie jokingly imitate Seifer by calling Zell a chicken-wuss, much to Zell's dismay.
At the end of the Dollet mission, talk to Cid before you get your SeeD results and this happens:
Cid: So, how did it feel out there on the battlefield?
The sheer fact that when Rinoa forces the normally distant Squall to dance with her the first time they met. It's very clear he doesn't want to dance, complete with him trying to run away from it (at first). Squall's excuse for not wanting to dance? "I Can't Dance". Note that the brief cutscene before this implies Squall really did feel attracted to her at the time, and the joke "hypnosis" Rinoa did to convince him to like her (to convince him to dance with her) wasn't really needed, meaning he may as well just had been nervous.
Squall's first impression of Laguna (AKA his father). In context, he tried approaching Julia the pianist, only to get his leg cramping up at the last moment out of sheer nervousness, much to his embarrassment. It's this fact, along with the escalating events that makes him even more nervous, that caused Squall to react to the scenes like this:
The entire first La Résistance scene and how annoyed Squall is that they're making him fetch Rinoa so they can begin the briefing.
Within that sequence is Selphie suddenly suggesting they blow up the train with a rocket launcher. Which actually might have worked...
How do you discuss things you don't necessarily want your contracted guns (who are in the same room) noticing? Why, crouch on the floor and start whispering, of course!
Then the meeting gets derailed when Zell and Selphie notice just how shoddy the train models look...
Selphie: By the way...this model's nice but the president's car looks kinda shabby....Why is that?
Watts: Yeah, Rinoa made it. That's why. We bought everything else at the gift store.
Zell: Oh...I thought some kid made it. The paint job sucks, too.
Squall: (....? Yeah...It kind of does.)
Selphie: It's one of the...ugliest things I've seen in my life. You must really hate him.
Rinoa: Are you guys finished?! Enough about the model! Can we get on with it now?
Or when you arrive at Timber. The La Résistance member coming to pick you up recognizes that you are the SeeD immediately and asks you for the password. If you get it wrong, however, he decides to lead you to their secret base anyway since "these guys cost us a lot of money!"
The poor Galbadian soldier who is first berated by President Deling, then his superior officer, lamenting how he is going to lose both this and next month's paychecks.
When heading to the TV station, the party has to put up with a couple of little kids mocking them from the window of a house above, something along the lines of the following: "We the wesistance twied to kidnap the President! And fwailed!"
When Irvine joins your party for the first time, he arranges party members that would go to Deling City; he chooses Selphie and Rinoa for himself, while Squall gets left with Quistis and Zell. If you chose to agree with his selection, then Selphie and Rinoa would get angry at you then they try flirting with Irvine as payback. All the while Squall has absolutely no idea why the girls snapped at him.
Quistis hanging off Squall's arm only makes it funnier.
In a mild case of Mood Whiplash given the circumstances, Zell provides a bit of funny on one of the train scenes when, in a fit of disgust, he punches the floor...hard enough for everyone, including the conductor to feel it. The conductor even has to come on over the intercom and let everyone know this didn't end up being a case of Nice Job Breaking It, Hero.
During the first Laguna sequence, upon arriving in Deling City Laguna simply parks their vehicle in the middle of the street and leaves it there. Step outside the hotel before going up to Julia's room and you'll find that he's created a city-wide traffic jam.
The first Laguna sequence also contains a priceless sight gag when Julia invites Laguna up to her room to talk, explaining that it's hard to have a conversation there in the nightclub since everyone's listening in. Cut to a wide shot of the nightclub showing that everyone in the room has clustered up close around their table to eavesdrop.
When Laguna, Kiros and Ward are escaping from the Esthar soldiers, they find their escape blocked by a giant cliff. Laguna forcefully throws Kiros and Ward off the cliff into the water below, then comments:
Later when he's being interrogated by a flunky working for Seifer, he demands Squall tell him "the true mission of SeeD." The player can choose to have Squall lie, in which case Squall bluffs and blurts out that the true mission of SeeD is... to grow flowers all around the world, putting him right into Deadpan Snarker territory.
Considering that the rest of the bogus "true mission" Squall throws out involves waiting for the nations of the world to be lulled into peace by the blooming flowers, and then attacking them... yeah, probably.
Irvine tries to finish off his Big Damn Heroes moment at the D-District Prison by making a casual, sauntering entrance... the effect of which is spoiled when Rinoa kicks him down the stairs and tells him to hurry up and stop trying to act cool.
The scene involving Squall's team stealing a Galbadian train involves a determined Galbadian soldier running after the train so that he could try and reclaim it. He actually manages to keep up a bit before tripping, causing one of the other team members to comment about this feat.
If you approach the Galbadian missile base on foot when it's time for Selphie's party to infiltrate instead of just driving up in the stolen vehicle, you're treated to a scene of cute, sweet Genki Girl Selphie trying to wheedle the gate guard into letting her and her friends in:
Guard: This isn't some kinda club you can sweet talk your way into. Besides, you're just a kid. I prefer someone more mature.
Selphie: Up yours!
During the battle which erupts at Balamb Garden between supporters of NORG and Headmaster Cid, a staff member and two trained Balamb students corner a SeeD defending two children in the training facility. One of the children declares he will help fight, and one of the students approaches him menacingly...only to reel over after the boy kicks him in the shin.
During the Galbadian Missile Crisis, Squall comes clean to Cid about his resolve to protect Balamb Garden, and Cid says "Quistis was right about you." If you put Quistis in his party, Squall will shoot a look at her as she gets this "I dunno what you're all on about" expression that you will never see again.
Squall, upon discovering the identity of the Garden Master, reflects that come to think of it, he's never heard anything about him before.
During the raid on Balamb, one of the orders you can give is to PROTECT THE HOTDOGS!
Squall: Cafeteria team, collect all the hotdogs and store everything in the secret shelter. Don't leave anything for the enemy.
During the raid, if you give the order for your comrades to come to you, He'll ask for Quistis, Zell and Selphie to come to him. After all the orders are given, a short exchange between Irvine and Squall happens.
Irvine: "Hey, hey hey, what's up? I'm not invited? I thought I was part of the gang."
The old fisher in FH who's intensely annoyed by your presence but then gets tangled in someone else's net prompting Squall to save him. His reaction is priceless.
It's a minor one , but players who remember the infamous "This guy are sick" typo from Final Fantasy VII can get a chuckle out of Squall saying "This guy is sick." about Irvine at the Fisherman's Horizon.
Following this, Squall discovering the naughty magazine that Irvine left to mark the spot that he thought would be good for Squall and Rinoa to hang out at during the concert.
Before the now mobile Garden departs to Balamb, Nida makes an announcement over the intercom before handing the mic to Squall so that he could make a speech. Naturally, he refuses to make one and demands for the (still live) mic to be cut (to the amusement of Rinoa who happened to be within the library at the time).
Squall: "A speech...? Forget it. Cut the mic!"
[Rinoa doubles over laughing.]
The party's reactions when they go into Zell's room during the events to liberate Balamb in Disc 2.
Bringing Irvine releases his inner child, by firing off the rifles in Zell's Room.
Zell: YOOOOO!! THE HELL YOU DOIN!?!
Squall: (I knew he would.)
And if you bring Rinoa with you instead, when Zell suggests going up to his room she jumps up and down with excitement. Inside, her noticing a picture of Zell's grandfather prompts him to sing praises about him. Squall quips...
Squall: ...So basically the opposite of you.
(Rinoa is laughing her ass off)
Which then prompts her to comment on Squall being too cool, Zell saying she's got him there.
If you bring Quistis, she starts to tell a story about how Zell was riding his T-Board (hovering skateboard) through the hallways and ended up crashing into the girls' restroom, before Zell furiously cuts her off.
If you bring Selphie, she sits on his bed and tells him he should be honoured that a cute girl wants to be on his bed. What's even funnier is that you have the option to make Squall agree with her. If you do then she replies "Squall, you are so getting it." If you don't, she'll deduct a SeeD rank from you for disagreeing (complete with comical sound effect).
Selphie (After being told not to sit on his bed): Well fine then! I didn't know you were so... anal.
Zell clinging to Squall's leg after he saved him in Galbadia prison, which ends with him conking Zell over the head with the handle of his gunblade for refusing to let go. Then he does it again if you choose him as part of the missile strike team.
When Rinoa makes you take her on a tour of the Garden, if you go into the cafeteria you see Zell throwing a tantrum when he hears they're out of hotdogs (which he'll be hugely embarrassed at when he sees Rinoa there). And if you bring her to the infirmary, Dr. Kadowaki will ask if she's Squall's girlfriend. If you reply Yes then...
Rinoa: Whoa, are you serious!?
Squall: I'm serious.
Rinoa: Wow, I'm speechless.
Squall: I'm seriously joking.
During Laguna's flashback sequence at the beginning of the disc, Kiros asks how Julia is doing. During the course of the conversation:
Laguna "the Sorceress's knight" vs. a real Ruby dragon.
And by Word of God, the movie that was being filmed at that time actually got made and shown on theaters (it inspired Seifer's fighting style), which means that Laguna's battle was not only filmed, the director threw it in...
When Squall's party came to the moonbase, Laguna was in the control room and his subordinate asked if they should check those guys before letting them in. Laguna said that he had a feeling that they don't have to do this which led to the controller decided that this was why they should check those people even more carefully. Even as President of Esthar, Laguna gets no respect and this doesn't seem to be the first time it happens either.
Laguna: Thanks for the vote of confidence. Why do you always play me like that?
When everyone in the moonbase were evacuating, Laguna was taken to safety by his employees against his will (Ellone was still in the base), the man crawled to Squall, telling him to take care of her before got dragged away like he was going to be eaten by monsters.
Zell Info Dumping everything that's happened since Squall left for the Esthar moonbase almost borders on Lampshade Hanging. Especially for those in their second playthrough onwards who just skim and tap through the whole thing..
When the party boards the Ragnarok and it suddenly starts moving
Zell: I hope this ain't the case but, I can picture Selphie in the pilot seat, and...
Quistis: ...screaming, 'Whoo-hoo, we're flying!'
Squall: (And standing next to her, a very excited Irvine...)
When asked, Selphie admits that she was poking at the controls and "it just kind of took off."
One flashback to Laguna's time brings up Dr. Odine's sorceress research, and his kidnapping of girls For Science!. As the narration continues, we see Ellone crying and Ward about to get rough with Odine, possibly for his attitude, then Odine breaks into an ineffectual escape, followed by Ward in a very anticlimactic low-speed chase in circles inside the laboratory. What really tears it is Ellone getting up and running behind them like it was a game of tag.
If you go to Winhill, taking Rinoa and Quistis, and go to the manor you have the option of starting a funny scene where Quistis scares Rinoa into thinking that the suit of armour is talking to her.
The president of Esthar being unceremoniously (and literally) dragged away by his aids in an extremly un-president-like fashion when a crisis starts during his visit to the space station. It gets funnier later on when you realize this was foreshadowing the fact that the president is Laguna.
You can comment that Ward and Kiros'Estharian clothes look funny, to which the latter will respond, "You wanna wear it?"
Mr. Monkey (after getting pelted by a stone): Your Mom wears combat boots!
The description of the "J Disaster," in which Ellone put fruit jam in Laguna's shoes, leaving him in almost in tears. Followed by the technician's comment "Sounds like a brat...I mean, a spunky girl."
After spending the entire game trying to get some hot dogs, Zell finally gets his hands on some during the ending movie. He eats them so quickly that he begins choking.
While it's possible to add amusement with any Final Fantasy game that allows you to rename the characters, this one offers an unusually entertaining possibility in that you can inject levity into the final boss battle by choosing to rename the lion on Squall's ring from the default of "Griever." "I thought naming a ring was a bit stupid in my first playthrough and ended up fighting "Tiddles.""