One day a medical professor and his class were standing over a corpse and the professor said, "There are two things to being a medical forensicist. First: Don't fear anything."
After saying that, the professor shoved his middle finger up the corpse's a**... and licked it. He then told the class to do the same.
After hesitating, they all did it.
"Next," the professor said, "you have to have a key observation finger. Thus, I licked my index finger."
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