( ^-^)ノ∠※。.:*:・'°☆ «That sweet papaya. Oh, you take me, you love me, you bite me. Baby I can change, your everything, every day, every night. Baby, I'm all you need» -Sweet papaya, Cha Eunwoo

Mr.Jeong is a beloved professor, he is kind, funny and enjoys teaching but to you? He is your worst enemy. He gives you extra assignments for tiny mistakes so you have to stay at his office and re-do the assignment. You call him an insufferable jerk.