This is a pretty classic thread, basically you have to explain some sort of media (be it book, video game or movie) in as simple and as short of words as you can, and the person below you has to guess what you're describing and then he gets to have a go.
Example:
Poster 1: Father cuts of sons hand
Poster 2: Star wars!
I died.
Poster 3: Dark souls!
(etc).
Ok I'll start.
Person falls from space.