Their instructor motions for them to come close for their first 3 lessons of medical school.
“The first lesson is that you must not be afraid of the human body, alive or dead” he says as some of the students are visibly uncomfortable.
He then holds up a finger and says, “you must also possess the strength to do the things necessary even though they may make you squeamish.” He then sticks his finger into the cadavers anus. Following that he pops a finger into his mouth.
“Your turn” he says.
Slowly but surely all of the students stick their finger into the cadaver anus and then into their mouths.
As many are retching and sweating he then says, “the final lesson today is that you must pay attention to the smallest details. You see I used my index finger for insertion, but, unlike you, I stuck my middle finger into my mouth.”