Dr Pepper was a neuro surgeon at John Hopkins Bayview Medical Center in Baltimore, Maryland one of the oldest health care institutions on the East Coast.
There was a soft drinks vending machine in one corner of Dr Pepper's office and a sign over his desk that read:
'It's not rocket science
it's brain surgery!'
Dr Pepper would spend most of his day in his office explaining very carefully to his patients that they needed brain surgery in order to remove this or that tumour.
When he had finished explaining as carefully as possible why surgery was necessary he would stand up, say "What's the worst that can happen?" and then hand his patient a soft drink before showing them the door.