It has occurred to me that I kinda ship EraserJoke for the same reason I kinda ship Bakucamie.

That reason being “this girl would drive him crazy and I find that hilarious” 

Okay but what if Ms. Joke has the world’s largest reserve of the most absolutely filthy jokes you can think of stored away in her head for when she’s faced with a target with a particularly dirty sense of humor. She just keeps those for emergencies or when her audience isn’t too young to be hearing those kinda jokes.

She has “clean” versions of all of those jokes stored away as well, of course.

When she and Aizawa met for the first time, during the provincial license exam,  he looked at her curiously for a second before asking what her quirk was,

“I make people laugh!”

“Tch, useless on me then.”

He had suffered at hands of Mic’s relentless puns and generally “so bad it’s good” jokes for the better part of a school year at this point, he’s half way convinced he can’t laugh at all.

Emi looked at him blankly for a second, blinked twice, then the most horrifying grin Aizawa had ever seen, before or since, stretched across her face, “That a fact?”

Shouta quickly figured he may or may not have made a horrible mistake.

During the first round, he couldn’t find her anywhere, his paranoia nearly getting him disqualified a few times if not for Mic.

In the second round is where she strikes, and she does it so subtly, that even the future Eraser head could never had seen it coming.

She runs past him on route to her objective, and as she comes near she leans into his ear to whisper the best, or worst depending on who you ask, joke in her dirty arsenal to Aizawa before he has a chance to even realize she did it.

She moves on, leaving behind a collapsing Aizawa Shouta to crumple to the floor, holding his gut as he laughs loud enough to be heard all around the exam grounds.

(He doesn’t pass that year, obvisouly.)

Aizawa has been on high alert around her ever since, while she’s determined to get another laugh out of him.

Hizashi has begged up and down multiple times over the years for Emi to tell him what joke she used on Shouta, but she only winks and says that it’s, “A secret between lovers~” Aizawa shudders every time she says it.

Bonus: She once got caught up in a major villain attack while in her civilian clothes, she managed to save the day by walking up to the group of criminals, all with a type of “giant” quirk and pretty mean looking over all, and managed to beat them by telling her personal version of “The Aristocrats” bit. Which is 30 minutes long.

By the time more heroes showed up to take the villains into custody, the lot of them were curled up into a fetal position. All videos of it vanish from the internet in under an hour.

She considers it one of her personal favorite achievement of her career as a pro hero.

“Well,” She tells the news channel that’s interviewing her with a cheeky grin, “That and making Eraserhead pee his pants using a dick joke.”

Aizawa vanishes for a few weeks after that.