I love the headcanon that Bakugou is deaf/hard of hearing. And Fuckhands McMike tweet "deaf bakugou is extremely fucking good and extremely fucking plausible but it's ONLY valid if he just takes out his fucking hearing-aids whenever midoriya starts speaking" inspired this,
Takes place during their final exam against All Might
--
(Bakugou 1st person P.O.V)
"Kacchan! We can't beat All Might one on one! Just listen to me!" Deku whined. Who the hell does he think he is, calling me weak? As if I was as useless as him? Shitty Nerd is always looking down on me! I'll prove to him, to everyone in the fucking world, that I am the best of the best. The king of them all!
"Shut the fuck up, Deku! I'm going to beat him, I don't care what the hell you say, now get the fuck out of my way!" I punched him with my gauntlet and stomped away in the direction of All Might. If I beat him without help from a Nobody, then no one can ever doubt my ability.
I felt something wrap around my arm, the annoyingly high-pitch voice of the nerd taunted, "Kacchan, we cannot win by fighting him, even you have to know that he's so much stronger than both of us combined. The exit isn't even that far away, we can win this by escaping!" I wrestled my arm out of his grasp and elbowed him in the ribs, making him groan in pain. Ha, he can't even handle a simple hit from me, and yet he thinks that he has the right to insult me to my face?
"Just because you can't win, or do anything at all, doesn't mean that I can't too! I've always been better than you, and that hasn't changed at all. Now. Get. Lost." I pivoted and hastily walked away, blocking him entirely from my mind.
In the distance, I could see All Might in all his glory. His iconic smile as wide as the Nile river, the bright blue of his eyes glowing against the blacks of his eyes creating a glare effect. Opening my palm, creating small blasts, readying myself for the upcoming battle, I prepared myself for the most life-changing moment I could ever get, beating the number one hero, alone. Sneering as I thought through my convictions, 'Fuck Deku, fuck everyone who ever doubted me! I'm King Explosion Murder, the one who's gonna be the absolute Number One Hero!'
The squeaky voice of Deku drowned out my thoughts, making me wish that someone would fucking mute him, he tried his best, which is actually pretty pathetic, "Wait, Kacchan! Stop," He tripped over his own goddamned feet as he ran through the cracked, desolated fake city, "Listen to me!" I let him stop in front of me, giving him a false sense of security, finishing his unhelpful rant. Then I grasped at his face, and let off another explosion, giving him a face-full of smoke. He coughed harshly, but even that didn't stop the damned bastard, "Kacchan, I'm your teammate, you should listen to me!"
Finally fed up with his shit, I took a stand and yelled, "You know what I have to say to that?" he stayed silent, for once in his fucking life, as I reached up to my ears. Securing my fingers around my hearing aids, I tugged them out from and around my ears.
Keeping them hidden in my closed hands I held them up in front of the nerd, who was still fucking confused. Slowly opening my hands I revealed my bright orange hearing aids, letting him get a glance, and then quickly stuffed them into one of my pouches. The gears started to turn in his thick ass skull, he finally understood what the hell it was I did. He gasped but didn't curse my life with his talking (not that I would've made any difference now).
With skill ingrained into my very existence, and the fact that I was finally unable to hear any shit he could ever say, I flipped him off and with no effort, I yelled, "Fuck off!"