A brain surgeon, a heart surgeon and an orthopaedic surgeon were playing golf. Suddenly a bolt of lightening struck and all 3 were killed. As they stood at the pearly gates before St Peter, it was realized that a mistake had been made. St Pete had the unpleasant duty of informing these guys they had all been killed early and they had to wait for their time to enter Heaven. The brain surgeon jumps forward demanding to be allowed in right away, ranting about how he had improve the qualty of life on earth, thanks to his skill and dedication. St Pete graciously acknowledged the poor fellow but asked his indulgence. Well, the ortho guy and the heart guy soon followed suit and each received the same explanation from St Peter. Shortly, a fellow in a lab coat, complete with stethoscope and little black bag, strolled to the gates, St Peter swung them open and in he walked. This enraged the 3 surgeons who now DEMANDED to be allowed in. St Peter replied, "Please gentlemen, calm down. That was God. Sometimes he thinks he's a Doctor."