Imagine seeing things in an upside-down manner. The sky is below and the earth is above.

For 29 year old Bojana Danilovic, this is the world that she's been born into. Danilovic suffers from "a rare brain condition called spatial orientation phenomenon, which has left her reading books and newspapers, and typing and writing, upside down because her brain does not process images normally. While her eyes see the world the right way up, her brain flips the image over." - Yahoo!

She has to read and see everything else upside down in order to understand what it says.