When talking to Garland in the sort of circumstances where you generally don't want to sass the king:
Garland: That was a joke. You were supposed to laugh. Stocke: ...Then maybe you should tell better jokes.
During the Fleeting Peace bad ending:
Teo: ......
Trying to get past the guards in Gran Plain before stealing Kiel's sword dancing moves. Highlights include Stocke being grovellingly polite, Raynie and Marco both being vastly amused by this, and Stocke having a very bad attitude about the whole thing.
When Count Selvan is talking to Dias after Queen Protea's decision to torch Granorg. It's the utterly deadpan delivery that sells this.
Selvan: Now, if you'll excuse me, I must go set my own city on fire.
Dias: ...I am sorry.
In order to create a diversion to rescue captive Gutrals Stocke has to steal some outfits off of some drunk Alistel soldiers.
Stocke: Your clothes. Hand them over.
Then, when it's time to actually take the clothes from the soldiers they beat unconscious, Raynie naturally opts to let Stocke and Marco handle it, confusing Marco until he remembers that Raynie is a girl and he sheepishly admits he tends to forget that fact owing to her tomboyish behaviour. Raynie is less than amused and vows that she would make him pay for that remark later.
Finally when they're ready to put on their purloined uniforms, Raynie evidently ends up forgetting that she's a girl as well and begins nonchalantly stripping right in front of Stocke and Marco and doesn't realize the problem until Stocke and Marco leave the room whereupon she finally lets out an embarrassed shriek.
When it's gotten out that Hugo has been faking Noah's proclamations and they've been chased out of Granorg by the good guys, Selvan gives Hugo a really sarcastic "The Reason You Suck" Speech, of which the best part is this, especially with the addition of voice acting in Perfect Chronology making the Sarcasm Mode apparent:
Selvan: Perhaps I should take a moment to offer a prayer for Noah's continued "graces!" (gets down on one knee) Almighty, all-seeing, Grand Prophet Noah! If it is your will, grant me the strength to exterminate these heathens and infidels! (stands up again) ...Am I doing it right?
Right in the middle of the massive Tear Jerker that is the True Ending, while listing the reasons he wants to go back:
(regarding Gafka) I promised to spar with him. After he finally remembered my name, I feel I owe it to him to return the favor.
His comment for Rosch and Sonja is also pretty funny:
They're both so stubborn... Who knows what would happen if I weren't there to mediate. Beyond that, they'd hold a hell of a grudge if I weren't present for the wedding.
Sidequests
The "Conversion" sidequest. Rosch acts like Sonja has a carving knife in her hand every time you find a Core Part:
Sonja: Oh! Core Parts! Now I can strengthen Rosch's Gauntlet! Are you ready, Rosch? Rosch:(!) H-Hey! What are you trying to do!? I don't like that look in your eyes... Sonja:("music note" emote) Heh... Don't worry. It won't hurt! Rosch: Er, Sonja... Calm down. Let's talk this over... Sonja: No! (screen fades to black; sounds of working and battle) Sonja: You look quite dashing, Rosch. Rosch:("grumble" emote) I thought I was going to die... Sonja: If you find any more parts, you know where to bring them! Rosch: Ugh... Please don't find any more parts. Sonja: ...What was that, Rosch? Rosch:(shouting)I just said I'm so reli...Er, no. I'm so re--Um, let's go, Stocke!I can't wait to test out all the new powers of my Gauntlet!
Perfect Chronology makes this entire exchange more hilarious with the addition of expressions and voice acting. Sonja is clearly giddy and excited over modifying the Gauntlet while Rosch's distress is made more apparent. Especially with his delivery of the last line.
The Technique Scroll sidequest, and the soldier's exponential loss of dignity. Especially:
Raynie: ...Are you hiding something? Soldier: N-No, nothing at all! Stocke: He probably just pawned the scrolls for money, but when he came back, they'd already been sold. Am I right? Soldier:(!) H-How'd you know!? Stocke: Just a wild guess. I didn't think I'd be right.
For extra chuckles, every time you return a scroll to him and teach Marco and Raynie new moves, the scene will fade to black with the sound of crossed swords. Whenever the scene fades back in, the poor soldier training your teammate ends up flat on the floor, as though Marco or Raynie just gave him a sound clobbering!
After accessing Master Vainqueur, Aht's first reaction is to call him a goblin, to his distaste. Her comment the first time you have him teach her a skill is to still call him a goblin.
In the "A Knight's End" bad end, he gets some revenge for Lippti and Teo's constant refusal to tell him things:
Teo: But, Stocke... I don't understand what happened to cause these events. Could you explain to me what that was all about? Stocke: If you can't see it, you're not ready. You'll understand it when the time comes. Teo: ...... Teo: Using my own words against me. Well-played.
Perfect Chronology exclusive
One of the Possibility Timelines in Perfect Chronology has one of the Artifacts Stocke needs to retrieve is within a whole crate of coal that look identical. What makes it funny is what Stocke has to do complete it: he has to go the Alma Mine and be taught by a miner how to identify coals by their Mana. Said miner treats this as Serious Business. The kicker is the node's name after Stocke finds the Artifact is "Coal Artisan Stocke".
Stocke: What am I even doing?
The two bad endings for the Possibility Timeline "Thaumachine Rampage".
The first has Stocke performing Percussive Maintenance on Fennel, which ends up fixing Fennel by making the upgrade he created with the Artifact to work, controlling the thaumachines and hastens the desertification. Afterwards, Lippti comments her surprise that a simple smack could doom a timeline.
The second has Stocke punch in the wrong code (for reference, the code is 4444), which activates Fennel's Self-Destruct Mechanism. Stocke is baffled by why Fennel would add a self-destruct feature at all, with Marco cheerfully justifying that every machine should have one. Even Teo agrees with Marco, to Stocke's dismay.
Nemesia:[overacting] Maybe we're actually soulmates! Oh! What should we do, Stocke!? Stocke: …Nothing. Nemesia: Aw, c'mon! If you're not gonna play along, you could at least let a girl down easy. Stocke: I think you're asking a little much of me.
With Gafka, they start chatting about the physical differences between humans and Gutrals and wonder how they would look like if they were born as a member of the other's race.
Gafka: Hmm… Stocke: What is it? Gafka: Well, if you had the hair of a Gutral… I'd have to change your name to Gold One. Stocke: …… That's possibly the most bizarre thing I've ever imagined.
Stocke's Oblivious to Love moments aren't half bad either, like accidentally making Eruca think that he was romantically interested in her waiting maid Marie, or Raynie thinking that he was openly checking her out in proper Chivalrous Pervert fashion and then sighing loudly in disappointment when she realized that wasn't the case.