option c: izuku accidentally calls tsukauchi ‘dad.’ tsukauchi stares. izuku loses balance for a sec before finding a way to save face by being like “did i fucking stutter???” and throwing it into everyone’s face so loudly and blatantly that everyone just thinks it’s a joke again. (it’s not)
option d:
“thanks, dad. … why is everyone staring at me?”
“you just called tsukauchi-san ‘dad.’”
“what? no i didn’t. i said, ‘thanks, man.’”
“do you see me as a father figure, izuku?”
“no. if anything, i see you as a bother figure, because you’re always bothering me.”