First-year students at Texas A&M's vet school were attending their first
anatomy class, with a real dead cow.
They all gathered around the surgery table with the body covered with a
white sheet. The professor started tht class by telling
them, "In Veterinary Medicine it is necessary to have two important
qualities as a doctor: The first is that you not be disgusted by
anything involving the animal body."
For an example, the professor pulled back the sheet, stuck his finger in
the butt of the dead cow, withdrew it and stuck his finger
in his mouth.
"Go ahead and do the same thing," he told his students.
The students freaked out, hesitated for several minutes, but eventually
toook turns sticking a finger in the butt of the dead cow
and sucking on it.
When everyone finished, the professor looked at them and said, "The second
most important quality is observation. I stuck in my
middle finger and sucked on my index finger. Now learn to pay attention.
Life's tough, but it's even tougher if you're stupid."