plagiarized from Dirt, Sean Doolittle.
A professor is giving first year med students their first lecture on autopsies. He decides to start by presenting them with two key principles. Professor says:You must be capable of two things to do an autopsy. First: you must have no sense of fear.
The professor sticks his finger into the dead man's anus, and then he licks his finger.
He asks all the students to do the same thing with the corpses in front of them. After a couple of weird minutes—total silencec, everybody looking back and force at each other—the student finally do as the professor says.
Then the professor holds up his hand.
The second thing is that you must have an acute sense of observation,he says.I stuck my middle finger into the corpse's anus, but I licked my index.