Some years ago, I was admitted into hospital as an emergency for a very minor procedure. As GP booked me in, he said. It is a day surgery job, you will be back home later this afternoon.
It was actually three days before I got home, because the procedure kept being delayed. At midday the following day, still awaiting my very minor surgery, I heard a nurse describe me as a bed blocker!!! When I heard this I went to Reception and said that as my minor problem had improved since admission and as I was a bed blocker, I would discharge myself and ring DH to come and collect me.
The look of horror on their faces was a pleasure to see. All of a sudden I was told I was going down to surgery in 30 minutes and preparations would start now. The operation happened as described. I was there for another day and it was nearly 2, and finally I did discharge myself, but that is another story.