I recently saw the following lines on a medical school bathroom stall:

Please flush the toilet. Do it twice.
I want to be an M.D.
M.D. = Missed diagnosis.
M.D. = Mentally disturbed
My eyes hurt
No matter how good she looks someone is tired of accepting her crap.

And witnessed this scene in a hospital:

Patient: “Thank you so much for taking care of me. You don’t know how much it means to me. When I get better I’m going to go to Africa. I’ve always wanted to go there. When I get there I’m going to kill a wild animal. I’ll kill it and I’ll take it back here, to you. I’ll find you, and I’ll kill the wild animal. I’ll split it in half with a knife. Right down the middle. And I’ll give half to you.”