about corpse

  One day in medical practice.
Lecturer: "Today we learn about the real body, for that we will study the corpse!" 

Then brought a corpse ..
Lecturer: "The first lesson, not to be disgusted!"
Then the lecturer put his finger into the anus (ass) the corpse, and then licked his finger.
Lecturer: "Well, you do as I did!"
Although many are screaming and vomiting because it can not stand, yet finally all the students do it one by one. 

 Lecturer:  "Well now the second lesson, thoroughness.Note, what I put is the middle  finger, while the lick is my little finger !!!"