Izuku is so excited about finally having a Quirk he refers to the spider that bit him as "that blessed spider".
Izuku tries to sneak past some Inner Demons using a cardboard box, just like Solid Snake. Too bad for him it is not as effective as Snake makes it look, and after a Smash Cut, Izuku is captured and held hostage.
After Izuku explains his Quirk to Bakugou and how he got it, Bakugou is surprised he didn't get any webs from it. But once Izuku mentions where real spiders make their webs, both of them cringe at the thought and Bakugou agrees it was good he didn't get any.
Izuku testing his web-shooters for the first time. On the first try they start to smoke, with Bakugou immediately spraying them (and Izuku) with a fire extinguisher to put them out. The second try several strands of web burst out and stick to Izuku's face, with him needing to wait an hour for it to dissolve while Bakugou laughs his ass off.
Eri saying she has no idea who All Might is, and the Stunned Silence that follows.
When All Might arrives to stop Shocker, Shocker foolishly thinks he actually has a chance against him. Right as he is preparing his ultimate attack, All Might stops him when he is in the middle of shouting it, and sends him flying five stories up and crashing into the ceiling.
When Eri first meets Nezu, the principal of UA High School, she calls him a "stuffed animal" while asking Izuku why he's talking to them. Everyone looks at her in shock over this before breaking out in laughter, including Nezu himself, he admits that's actually a new one he has been called.