Hey, I had this pretty spectacular idea today!
It is a hybrid between bifocals and Transitions lenses.
They are bifocals but instead of two different prescriptions, the bottom half is regular glasses and the top half is sunglasses. That way you can still look down your nose at people and/or books, but if you're a celebrity or even just act like one, you can remain pleasantly anonymous if you stare straight ahead.
Imagine them on this classy dude, for example.
Ok, well. Bye for now!
(s)Addendum: I actually created this whole product just so I could use the expression "Sunglasses half full."