I find this strip hard to make out.

Do you mean, you don't get it, or you can't see it through your hair.

Well, uh, both. But I think they are making a joke at the expense of the grad student. Grad students have to carry a lot of books. A LOT of books.

Scruff, you've been in grad school a while now, so they probably didn't have this when you started, but TODAY, you can put all your books in a iPad.

What? I Pad? What? I have to carry pad's too, that's where I write my notes!

Now it's called "iPad" you know a digital tablet? e-reader?

What? You first years are so difficult.