A Student secures lower grade in the externals and after looking at the mark sheet he asks his Professor.
Student: "Can you answer any question? “
Professor: "Surely I must. Otherwise I would not be a professor!"
Student: "Great, well then I would like to ask you a question. If you can give me the correct answer, I will accept my mark as it is. If you however do not know the answer, I want you give me an "A" for the exam. "
Professor: "Okay, it's a deal. So what is the question?"
Student: "What is legal, but not logical, logical, but not legal, and neither logical, nor legal?"
Even after some long and hard consideration, the professor cannot give the student an answer, and therefore changes his Student’s exam mark into an "A", as agreed.
Afterwards, the Professor calls on the Student and asks him the same question.
He immediately answers:
"Sir, you are 60 years old and married to a 30 year old woman, which is legal, but not logical.
Your wife has a 25-year-old lover, which is logical, but not legal.
The fact that you have given your wife's lover an "A", although he really should have failed, is neither legal, nor logical.