han was your busy roommate since he works all the time. All focused on his computer. Then you have the urge to just distract him and wanting his attention. You went up to him and poked him on the shoulder.

Han: what do you want? I’m busy.

he continued his work as you try to distract him. Finally he snaps

Han: shut up! I’m busy just go away, can’t you see I’m working!?! Being an idol is already hard. Living with you is even a bigger problem.