That's kind of like the one where the Gynaecologist decides to learn to become a Motor Mechanic.
After 3 years of attending both Practicaland Theory Courses finally comes the Examination day for the Practical part of the Course, he has already passed the Theory Exam with flying colours.
Before the class, each has an engine on a stand, the Examiner tells them they must dismantle the entire engine and then re-build in the allotted time of 4 hours and the engine will be tested to ensure it actually turns freely as well.
3 hours go by and the Gynaecologist downs tools, cleans his hands and sit beside his completed task.
The next morning he called in to the Lecturers office and is told his exam scores.
" Sir", says the Lecturer, I gave you 100 points out of 100 for the dismantling, 100 out of 100 for the re-assembly plus an extra 100 points because you managed to do the ENTIRE task simply by going through the Exhaust outlets."