The first time Izuku tries to lift something with telekinesis, he grabs a salt shaker and accidentally launches it through the roof, to the shock of both Inko and Toshinori.
When learning the secret of One For All, Inasa bows so low and so forcefully that his head dents a discarded mini-fridge.
On the bus ride to the USJ, someone questions Tetsutetsu's name and power.
"Man, his Quirk is Steel, and his name is iron-iron iron-iron? Who the hell wrote this script!?"
After Mina's "Alien Queen" and "XenomorpH" names get taken, Momo writes down her own suggestion (Amina Acid) and then sits back at her desk with a smile on her face.
Mina: (after reading her suggestion) You're way too cute to be sitting there so smugly!
All over during 1A's first meeting with Nejire:
The class is expecting someone even more terrifying than Aizawa only to meet Nejire who cheerfully flits around the room gushing over everyone.
Tokoyami makes a dramatic Badass Boast while attacking Nejire... which is distinctly hampered by the fact he's currently huddled in a tent to maximize Dark Shadow's power.
Koda's attack causes Nejire to get distracted by a fluffy bunny which she promptly starts cuddling until she gets reminded of the spar.
On their date together, Izuku anti's Camie's joke.
Camie: Say, have you ever heard of updog? Izuku had been waiting his entire life for this moment. Izuku: Not much, what's up with you?
While the pair are playing Mario Kart, Camie decides to get serious and moves to a different seat.
Izuku: Oho? You're approaching me? Instead of running away, you're coming right to me? Camie: I can't beat the shit out of you without coming closer. Izuku: Ho, ho! Then come as close as you'd like!
Izuku realizes too late Camie's plan when she sits down right behind him and promptly starts nibbling on his ear to distract him, causing him to drive right off the track.
During their date, Momo asks Izuku how his morning was. He remarks that it was pretty quiet and he just did some easy exercises... including running a marathon and levitating cars. Several other students at U.A. promptly feel their ears burning at what he considers "easy".
Bakugo breaks out his quirk during a volleyball game among the first years, only to quickly learn this was a bad idea when the other team, containing the likes of Inasa, Izuku, and Itsuka, completely dominates his team once they start using their quirks.
During their time at an arcade, when they start playing at the basketball hoops, Setsuna gets the idea to do a punishment game, with Nejire adding that the winner out of all of them decides the punishment for the worst scorer. Momo scored the lowest while Camie scored the highest. When they return to their hotel room, Camie whispers to Momo what she will be doing, something Momo is mortified to do... cosplay as French Maid. Momo's total embarrassment and everyone else's reactions sell it.
Camie: Say the line! Momo:(thinking) 'Oh, why did I join in on this dumb bet!' ... "H-How m-may I serve you t-tonight, goshujin-sama?" Mina and Setsuna started drooling, Nejire hunched over, trying to stem a nosebleed, and Izuku almost passed out. Setsuna: Oh my, I think daddy likes. Momo: I'll get you for this!
During the actual game, Setsuna theorizes that Nejire is doing so poorly because her large bust is getting in the way.
Momo: (glaring at her own breasts) Betrayal!
The obstacle course of the Sports Festival is basically one long Most Extreme Elimination ChallengeShout-Out, resulting in constant comedy from the participants. Noteworthy examples include:
Mina tried to melt a punching piston that had just nailed her in the boob, only to almost get punched again because she only dissolved the glove.
Yui suffering a Groin Attack from one such piston. When Izuku offers to heal her, she grabs his hand, plants it on her crotch, and has The Immodest Orgasm as she is healed. And this is on live television.
After Yui shows off her creativity with her Quirk, Aizawa tries to poach her.
Aizawa: She’s too good to be in your class, Vlad. Which one of mine do you want in trade?
Several girls deliberately jump into a pit and slow themselves down to wash off the foul-smelling mud from the previous obstacle.
Izuku tries to levitate over a swamp, only to be knocked face-first into the muck by a dodgeball.
Yui growing a stepping stone to cross a mud pit then shrinking it back when several other students were trying to use it.
Momo trying to make a Side Bet with Izuku, only to completely fail to grasp how much money she's betting, including assuming that a pound of bananas would cost roughly one hundred thousand yen (or about $100).
When they reach the last obstacle, a mountain, Izuku briefly wonders if UA would be cliche enough to include boulders rolling down…only to find that, yes, UA is indeed that cliche. He tries to dodge into a nook, only to get pushed into the path of one of the boulders, get stuck to it, and roll back down to the bottom. He gets back up, screaming in rage, before coming to a realization.
Izuku: Ah, so this is how Bakugō feels all the time.
