I’ve actually had this rolling around in my head for weeks and it was funny when I first thought of it. Sometimes I am self-conscious of my dumb ideas.
Different KamSero anon, but like headcanon that Bakugou and Kirishima argue about kissing in public, while Sero and Kaminari don't see the big deal. Bakugou tries to tell them that it's embaressing but Sero and Kami peck eachother on the lips to demonstrate it "not being a big deal". P.S. They may of broke Bakugou and shut down his brain in the process.