I don't know if this has been done before or not but who cares? So the game is simple, just post a secret about the person above you. Have fun
The reason is quite obvious. This hasn't been done before because there's a very low chance of knowing a secret about the person above. Unless you want us to invent a secret for the person above.
She once told me a story of how she fell down a hole and became friends with animals. (I think she's on drugs)