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Kacchan's First Curse Word

Summary:

The Bakusquad is curious as to how Katsuki learned his first curse word.
Who to ask?
Midoria of course!

Notes:

Literally just a one shot based off of my Sister/ beta reader and I talking about Katsuki's first curse word, and a random fanart she found that inspired the convo.

(See the end of the work for more notes.)

Work Text:

“Hey, Midoria!” Denki called, pulling the greenete from his homework. “Can you come here for a second?” Izuku stood from where he had been working on his homework at the dining room table and made his way to the lounge where the Bakusquad, minus Kacchan, were gathered.

“What’s up, guys? How can I help?”

“Perfect question, Mido!” Mina answered. “When did Baku learn his first cuss word? We have bets, and he won’t tell us!” The freckled teen laughed nervously before perching on the arm of the couch.

“Well, he was about a year and a half old when he learned to speak, but I think his first one was about a year later,” the boy said uncertainly.

"Woah! Bakubro didn’t cuss for a year?” The group exclaimed different versions of the same shock before Mina urged them to shut up.

“Okay, now I have to know—where and when did he learn it? Do you know?” Izuku flushed a deep red and nodded. “Tell me, please!” The pink girl shook Izuku, making his head rattle a bit before he got her to stop by, promising to tell her what she wanted.

“Okay, to start off, Auntie used to never cuss in front of us. She was super determined to be a good mom who never taught those words to her kid, etc. She had Uncle and my mom constantly reminding her to think, rephrase, and reword what she was saying so she could keep to her goal.

“Well, the day was pretty much like every other day at that time. My mom was working so she could pay for things, so I was over at Kacchan’s house. We’d played for a while, and Auntie had tucked us into bed for a nap. Kacchan was so tired that he fell asleep almost immediately.”

“I don’t see how this is about his first curse word.” Kiri whispered to Sero.

“I’m getting there!” Midoria laughed. “As I was saying, he fell asleep, but I was thirsty, so even though we weren’t supposed to leave the room, I snuck down the stairs to the kitchen to grab a juice box or something so Kacchan’s mom wouldn’t hear me trying to get a cup or fill it. I could hear her talking on the phone with someone, and I heard her say ‘fuck’ but I didn’t know it was wrong for kids or whatever.”

“Did we just hear Mido-bro cuss?” Kirishima stage whispered.

“If you listen to the story!” Izuku cut him off with another laugh. He hadn’t expected them to be quite so invested or to care about such weird details. “Now, I heard her say, ‘What the fuck,’ to whoever was on the other side of the call. I got my drink and snuck back upstairs to nap. When Kacchan woke up, he woke me, and we started playing while waiting for Auntie to say we could go back outside. While we were playing, I repeated the phrase and taught Kacchan the word ‘fuck’.”

The group broke out in exclamations over the revelation. Izuku’s giggling voice brought them back into the story. “Yes, it’s all my fault he started. Weird doesn’t even begin to cover it. But, that’s not the best part. The best was that after my mom got off, and she was picking me up, Kacchan said it in front of all our parents! As soon as the words left his mouth, Auntie freaked out! She immediately asked, ‘Where the fuck did you learn a shitty word like that, Brat?’ The look of horror that crossed our parents' faces was comical, to say the least, and he hasn’t stopped cussing since!”

The group tried hard not to laugh but were utterly unable to hold it in. They couldn’t believe that that was how the explosive blonde had begun to cuss. They had begun to reign in their giggles when Izuku felt a familiar presence behind him.

“You seriously fucking told them about our first curse words, Babe?”

Notes:

I was imaging this as Katsuki knows Izuku would tell the story better, and so never told them so they would ask Izu. They've been through enough that Izuku knows this and therefore has no qualms about telling, and knew that Katsuki was hiding around the corner and listening to the whole thing.