Ouch

So I have been staying in this week for lunch to get some studies done during lunch time. This being the third day in the week, I suppose the colleagues came over to see if I was interested to have lunch outside. 

So I said no, because I brought my lunch and was intending to go gym, when she said, "Aiyo, 有必要mug到这样吗？"

Thanks ah. I'm not particularly smart and this sem has been really difficult.. So pardon me if I need to take more time to study.