One day when I was working on a cardio-thoracic surgical ward, I was trying to quickly check vital signs on all my patients before the surgeons and their teams did their rounds. As I had looked after one of my patients previously, I was aware that he was a very deep sleeper, and often slept with his eyes half open. I decided to check on all the other patients first and come back to him as it often took him a while to wake up.
I came back into the 'deep-sleeper's' room just in time to see the Registrar beside the patient's bed, looking very worried, obviously thinking that the man had become unresponsive. He was gripping the man's shoulders, shaking him and loudly saying, 'Are you alright? Wake up! Are you alright? Can you hear me?'
The man woke up with a huge fright, jerked upright, pushing the Registrar away, and shouted, 'Who are you? What are you doing here?'. The Registrar also got a fright, and jumped back...
I couldn't help laughing. Eventually they both saw the funny side- once their heart rates had returned to normal!