Pretty much all of Parasoul's story mode intro. Especially the part where Parasoul instructs one of her soldiers to send soldiers to help her hunt the Skullgirl down...and get Umbrella some ice cream. Said soldier who got the order then calls it "Operation Chocolate Dawn".
Ms. Fortune's line to Filia: "Can I have a cheeseburger?"
She doesn't appreciate having it turned around on her, though:
Cerebella: You can has cheezburger? Ms. Fortune: That's racist!!!
Filia and Squigly meet in the latter's story mode. Filia tells Squigly & Leviathan that she's lost her memory and Samson is helping her find the Skull Heart so she can use it to get better. Leviathan accuses Samson of taking advantage of Filia's amnesia, manipulating her into going after the Skull Heart because he wants her to be turned into a Skullgirl. Samson responds by being a jerkass, insulting Squigly's appearance and then telling Filia that she can't trust this undead chick, who has to be working for the Skullgirl. At this point both Squigly and Leviathanwant to beat the crap out of Samson.
While the first half of Double's ending is pure horror, the other half shows us Aeon's room. Which is a cluttered mess filled with everything from a Samson wig, a Painwheel backpack, the Necronomicon, and a Ms.Fortune body pillow. Especially funny because this means that one of the Skullgirls equivalents of God is a hoarder.
Fukua's story mode: The entirety of the story (drawn in a slightly Super-Deformed style to illustrate how it's off from canon) is revealed to be All Just a Dream by Filia having a nightmare of Fukua putting on a Filia mask and claiming to be her. After she rinses her face off with the bathroom sink, Filia stares into the mirror... only for a Jump Scare of Fukua being in the reflection instead of herself. The Stinger has a second jump scare of Umbrella and Annie also in the reflection (Annie being there makes all the more hilarious considering the scene is one big homage to the last scene of Twin Peaksnote "Where's Annie? Where's Annie?! WHERE'S ANNIE?!").
And after clearing Fukua's story mode, a new cutscene is unlocked: A joke cutscene where Filia talks with Samson about using the Skull Heart to wish for infinite hats, since Samson keeps on eating hers every time they get ready for a fight.
The announcer's "This battle is all in the mind" remark takes on a deeper meaning, because it is actually true.
Eliza's intro line when facing Valentine: "Were you blessed by Taweretnote a fertility goddess, or by a scalpel?"
If you're the type for punny mythology references, Eliza's moves contain a few: Khepri Sun (Khepri being a solar god), Upper Khat (a pharaoh's headdress), and Albus will occasionally exclaim "Let's duat!" during his assist (Duat, the Egyptian land of the dead).
Horace's quotes of Falcon Dive; a bird screech, him shouting "Screeech!", and him saying "I am screeching!" in his usual Battle Butler way.
On the Meta side of things, some of the voice actresses from the game have a few rounds with each other, and each one of them descends into Crowning Moment of Funny material. The first video alone includes Erin (Parasoul) descending into raving insanity for about 30 seconds and putting twists onto her existing lines, while Sarah (Peacock) raves about shouting things like "I see London, I see France..."
"Look at that, I crowned a princess!"
Pretty much any line Sarah says due to her being a Large Ham.
"TAKE THE SHOT! TAKE THE GODDAMN SHOT!!"
"Where the hell are my followers? Goddamn Egrets!"
At the end they are both reduced to incoherent screaming.
Sarah: Did we just have sex?! Is that what happened here?
The battle between Laura (Valentine) and Sarah (Peacock) is pretty glorious as well. Starting with Sarah shouting "HELLOOOOO NURSE!!", followed by Laura trying to convince Sarah there is candy in her truck, prompting Danielle (Painwheel) to say "Don't go in that truck, I made that mistake and look at me now!" Also "WHAT HONOR?! I'm a fuckingcartoon, you bitch! I have nothing!"
Sarah's Peacock gets away from Laura's Valentine, who was sawing her head off in mid-air:
Sarah: No, no! It's elective, it's elective surgery! Laura: I dunno...I could really help you, uh, look better in that dress... Sarah: You—Have you seen my measurements on the website?! I have no figure, there's nothing you can do for me!
Then, in Round 2, there's this moment after Sarah successfully lands an Argus Agony Blockbuster move:
Sarah: "Oh, there it is! Finally, I countered her! I countered her. Look what I did, Mom! Look what I did! Are you proud of me?! Do you love me now, Mommy?!" (Peacock then gets hit by an EKG Flatliner attack) Laura: "No. No, Mommy does not love you at all."
Speaking of the EKG Flatliner, Sarah often lets out a high-pitched "EEE!" when she gets hit by one.
And then there's every time when Laura accidentally activates the EKG Flatliner in the air and misses, followed almost ALWAYS by "NO NOT IN THE AIR!!!"
And when Peacock sends out the big bomb, they frantically try to get as far away from it as possible.
Erin (Parasoul) vs Laura (Valentine)'s 1st fight. Anything from near the end of Round 1 and onward is just going to have tears coming out of your eyes, and most of the time it's going to be Erin's innuendo or Large Ham moments. These moments are connected to each other practically in the span of seconds, and it doesn't even end there:
Erin: (after just beating Laura) OHHHHHHHHHHH, YES, THAT FELT GOOD! OH, I AM HEALED! Praise the Lord!
Erin: Oooh, I feel better already! You are good for my health!
Erin: You don't know how to operate your titties the way I know how to operate my titties! My titties are all organized.
Kimlinh: Yes! I nommed you!... Your boobs taste funny. They taste like plastic.
Laura(after winning a round): You might be a Skullgirl, but I'm a Skullwoman!
And now they play the story mode, with some dubbing involved. The hilarity in these cases however stems not only from the voice actresses, but the cameraman, AKA one of the Egrets. Crowning goes to his performance as Dr. Avian, and Fat Albert!Double.
"I'm thirteen; I'm a fucking tween!"
"Dr. Avian! Who did this to you...?" (beat) "WHERE THE FUCK WERE YOU?! Look at me!"
"Wait, what about if it's just the tips touching?"
Sarah: "Then you should probably have a long talk afterwards."
As well as Ms. Fortune's mentioned above, the other cast playthroughs of story mode are each gems in their own right. From Double's playthrough, and to the tune of 'In The Navy':
In the Trinity... You can lose your fucking mind, IN THE TRINITY!
In Filia's story playthrough, Christina loses to Marie several times. With each one, the space-filler sprite of Filia at the side of the screen switches to become increasingly sad, and then angry.
The VAs are at it again during the Breast Cancer donation drive: Every main voice actor for the game except for Danielle attended, and they did more story mode "dubbing". Since Del also couldn't come, they got Mike Z to dub Samson... which, of course, he did in his REAL SOVIET DAMAGE voice.
They held another livestreaming event for the Breast Cancer donation drive: The only absent VA was Christine (with Danielle and Sarah making late but grand entrances). Even more story mode "dubbing" ensued. Other highlights include Laura, Cristina, Kimlinh, and Erin all singing "A Whole New World", most VAs taking requests for other character voices, and Squigly's formal debut and the VAs' reactions to it.
The videos for the stream can be found here, with most of the events happening in this one.
Fukua...a Take That to Capcom's Decapre trailer for Ultra Street Fighter IV in the form of a palette-swapped and moveset-altered version of Filia. But, as the video description says, Lab Zero believes in taking a joke as far as it can go...which means Fukua is an actual, playable character now.
The best part? Look at her alternate costumes. Most of them are references to other clones and/or palette swaps in video games.