He cussed in slang English, which had them even more dumbfounded lol. Man just fell harder

he said something along the lines of "Fuck you, asshole. Eat shit and go to hell. Even your face looks like shit" but it's shown in Dohyun's POV. It's blurred here to make it look like it barely registered because it was rapid-fire English, which no one expected him to do because he seemed so timid