Pay Attention!

An experienced pathologist was lecturing a group of students and he began by saying, "You must have two qualities to be able to do this job. The first is you must have no sense of fear." As he said this he stuck his finger into the corpse's arse on the table in front of him, pulled it out, put his finger in his mouth and licked it. To impress the lecturer every member of the group followed suit. The pathologist then said, "The second quality you must possess is a keen sense of observation. You will have noticed that I stuck my middle finger in but I licked my index finger"!!!