A new nurse at a hospital

A new nurse at a hospital was perplexed by Dr. Smith’s behavior.

Off and on throughout her shift Dr. Smith would run up and down the hallway, yelling, “Tetanus, measles, flu!”

Very curious, the nurse asked the head nurse, “Why does Dr. Smith keep doing that?”

“Oh, just ignore him,” the head nurse said.

“He thinks he calls all the shots around here.”