Ouma Yamisaka makes a dramatic entrance, trashing the restaurant Touma and Index were eating at. Touma angrily rants at Ouma for shredding his homework with his attack.
Touma's dad flirting with Oriana Thompson and Mikoto's mom. Followed by Touma's mom scaring the crap out of him with her jealousy.
Touma's mom: Touya-san, you're doing it again!
Episode 14 of Season II: When Touma was helping Orsola move by looking for newspapers, he finds two doors. He knows that there is a bathroom behind one of them. Straining his hearing, he identifies the shower as the one on the left, so he opens the right door. To find a naked Orsola. While decrying his fate, a nude Index appears from the left door. Both doors were bathrooms.
Touma: "THE RIGHT SIDE IS THE BATHROOM, THE LEFT SIDE IS ALSO ANOTHER BATHROOOOOOM!?!?!? ARE YOU KIDDING ME!!! THIS IS JUST HELL WAITING FOR ME ON BOTH SIDES!!!! ABSOLUTELY RIDICULOUS!!!! WHY ARE THERE TWO BATHROOMS IN THIS HOUSE!?!?!?"
Not to mention his reaction when he first opens the door. "Why didn't I just knock?"
Episode 15 of Season II: Touma's Imagine Breaker destroying the clothes of Agnese, Lucia, and Angeline. Angeline flipping Lucia's skirt. Touma falling on Itsuwa, with her friends yelling, "Now's your chance! Go for it!"
Episode 17 of Season 2, three of the Misaka Sisters realize that a fourth is not so identical upon learning she's taken up reading diet magazines and has lost weight.
Amata Kihara: That Aleister is out of this world. You claim to be a scientist, yet you reject science? What kind of scientist is that? (to his mooks) Did you guys notice the Bible has become a pop-up book? (Beat) What are you guys staring at? (turns around, sees Accelerator diving at the window) Oh Crap!
Episode 23 of Season 2, Tsuchimikado and Touma are discussing the impending war in Academy City, and then comes one of the funniest Mood Whiplashes ever.
[Tsuchimikado is telling Touma that this isn't his fault, that the scale of war will be different from everything else they've faced before, etc.]
Touma: "Tsuchimikado, I've made up my mind."
Touma: "Yes, I'm... I'm going to start studying English!"
Episode 24 of Season 2, the drunk Mikoto's mom flirting with Touma and Accelerator.
In Volume 14, Misaka's pissed that Touma's cell phone treated an e-mail she sent it as spam. While looking through Touma's "Recieved Mail" folder to confirm that Touma isn't lying, she learns something else: Touma has her mother's phone number! When Mikoto calls her mother (using Touma's phone!), her mother tells her that she must have been drunk that night and doesn't remember the details. Mikoto calmly hangs up, returns Touma's phone, and asks Touma the following:
Misaka: "What the hell were you doing with my mother while she was druuuuuuuunk?!"
Also in Volume 14, Touma is taken by Tsuchimikado to France in order to deal with the C-Document affair. How do they get there? By taking a supersonic plane. Unfortunately in order to avoid giving away their intentions, Tsuchimikado opens the plane's luggage hatch and boots Touma out with a parachute before jumping out himself. The illustration for the scene is absolutely priceless.
In Volume 16, right before all the action that happened, we had a series of hilarious things going on. Ready? Here's the list.
Because of Touma, the class was about to miss lunch. The Delta Trio and Fukiyose had to run out of school to buy lunch, but it was illegal for them to do so. Being chased by a teacher, Tsuchimikado then offered Aogami Pierce as a sacrifice by using him as a step to get over the school fence!
Then Itsuwa, who was acting as Touma's bodyguard, found that he was chased by the same teacher, and immediately went to fight said teacher with her spear after mistaking him for Acqua of the Back.
Then after that, Itsuwa and Touma were walking together after school, getting all flustered. The Amakusa were stalking them, and to add some spice to their relationship, Tatemiya kicked a football that landed on Touma's head and pushed him into Itsuwa's breasts. With Mikoto watching too!
Then Itsuwa wins Index over with her cooking, and Maika was so amazed by her cooking that she THREW the dinner she cooked for Tsuchimikado in angst.
Then Itsuwa, Index and Mikoto met each other in the hot springs. Mikoto was thinking about Touma until she fainted from heatstroke.
In Volume 17, Touma pays a visit to England for a strategy meeting with the Queen of England. While being toured around the castle, the second princess, Carissa, notices that Touma is fooling around with his phone and asks for a photo. Soon, the two other princesses notice and try to join in, but are cut off by Queen Elizard:
Queen Elizard: "What do you think you're doing?"
(the Knight Leader and Kanzaki nod in agreement)
Queen Elizard: "This is England, the nation of the Queen! Why are you taking pictures leaving out the leading part?!"
Knight Leader: "Ah, you fool! Don't show off your unrestrained love of festivities in front of someone from another country!! This is a strategy meeting!!"
(the queen rushes over to Touma, but the Knight Leader tackles her.)
(Touma takes a picture with Carissa and her sisters, at their insistence)
Queen Elizard: (shocked) “Ah! You took it!! You really took it without me!! You can redo it! How about you take another one with me in it!?”
In Volume 18, Agnese hits one of the knights with a Groin Attack.
What was even funnier was the dominatrix mode she went into on the knight after said attack. Heck, she even threatened that she would shove her staff up his ass, for crying out loud!
New Testament Volume 1: Touma makes his triumphantreturn, saving Shiage, Accelerator, and Fremea. His awesome return is cut short when Levinia Birdway out of nowhere kicks him in the nuts.
The drunken Touma managing to accumulate a large number of girls on his way home. From the descriptions you can work out that these girls are Himegami Aisa, Tsukuyomi Komoe, Fukiyose Seiri, Musujime Awaki, Kazakiri Hyouka and Kumokawa Seiria. And in every case the text, which is from Misaka's perspective, mentions how big their breasts are.
Kuroyoru Umidoru goes on a rant about Touma taking villains too lightly and fires a Bomber Lance at Touma when she tries to escape. His response, which completely undermined her very belief and existence, before moving past the subject: "Yes, yes, and here’s Imagine Breaker.”
The entire volume is one long string of funny moments interspaced with exposition and the occasional serious note. Drunken Touma calling Misaka Miko-chan, drunken Touma collecting about a dozen girls as he stumbles home, inciting the awe of Shiage, and the admiration of Accelerator for being able to balance both a normal life and a life of fighting. The above bit with Umidoru, compounded by Touma asking her if she has cat-ears and Misaka Worst finding some and threatening to put them on her. Last Order and Worst in sync upon feeling as though their place by Accelerator is being threatened by Fremea. The members of ITEM meeting Fremea. Birdway arguing with Fremea, and finally Lessar's reaction to finding out Touma has returned to Academy City.
Worst continues her trend of trolling everybody when she meets Misaka Mikoto, first attacking her for her borderline stalker tendancies (buying a couples pair ring when they aren't even going out) and then moving on to attack her true weakness.
Worst: What’s the point of an original if she loses to the clone in so many ways?
Misaka gets love advice from the president and a little girl (the 8 year old parroting something he'd told her before). The little girl tells her to take off her bra in front of Touma and embrace him before he has a chance to react, while the president tells her to embrace him while wearing a string bikini and then untie it to send the message across. Bonus points for doing it nearby a Love Hotel. Misaka's reaction is to threaten to smack Robert Katze.