Sunghoon is the student council president and you're in the honors society. You guys are good friends, not best friends..just good friends. You have this habit where you hit yourself in the head every time you do something wrong or you don't / can't do anything right

One day, you and Sunghoon are studying together at the library and you keep getting one step wrong over and over again. (You're in Trigonometry) You hit yourself in the head with a small laugh every time and Sunghoon takes notice. The next time you did it, he looks at you concerned and worried.

Sunghoon:: "Stop hitting yourself." He says in a stern and firm, but caring tone of voice.