On the Mask-like Face

It's deja vu all over again.

Lecturer: Medie, are you okay? You looked, erm.... worried.

Medie: I'm fine.

Lecturer: Are you sure you're not down or anything? You're so quiet.

Medie: No no. I'm fine.

The God-knows-how-many-th lecturer to comment something like that in the past 4 months. So I'm beginning to wonder, my keeping quiet gives people the impression that I'm what, depressed, sad and worried?

Well... My facial muscles want to relax and I just let them. Boo~~
Plus. I don't like to talk.

Any problem with that?