Is this really happening?

So, I woke up yesterday morning and I had black circles under my eyes. I thought to myself, did I not take off my make-up last night? So, I pulled out me eye make-up remover and started wiping the black off but it never came off! I thought that was a little weird, every other time I take off my make-up this remover worked. Well, for the last few days I look like I have mascara under my eyes! I didn't think that I was that sleep deprived!