A Psychology Professor

One day in a well known University, a Sr Psychology Professor started his class on a very serious Topic. The moment he turned towards the blackboard, one of the students Whistled. He turned, looked at the class and asked the whistler's name ............. As usual and as expected no one answered.
The Professor peacefully kept the Pen in his pocket and picked up his bag. Saying that, the lecture ends here and that was enough for the day, he started moving towards the gate of the class. Students were overjoyed to be free.
Then, he suddenly stopped and turned towards the class, kept his bag on the table and said, "I'll tell you a story to utilise the remaining time". Everyone became interested.
Yesterday night I tried hard to sleep, but it was miles away from my eyes, so I thought I'd better get petrol in my car, which will save my time next morning and might induce sleep. After having my tank full, I started roaming in that area, enjoying the peace of a traffic free ride.
Suddenly, on the corner I saw a girl who was as young and beautiful as the clothes she was wearing. Must have been returning from a party. Out of courtesy, I turned my car towards her and asked if I may be of any help. She asked me if I could drop her to her home, she'll be very obliged, to which I agreed. (Who would deny a beautiful young company instead of a dry non sleepy night.)
She sat in the front seat with me. We started talking, and to my amazement she was very intelligent, had control on many topics which many youngsters don't.
When we reached her address, she admitted my courteous nature and behavior and accepted that she had fallen in love with me.
I also admitted her intelligence and beauty and that I've also started liking her. I told her about my job as a professor in the university.
The girl asked my number, which I gave her willingly. Then she asked me a favor, to which i couldn't have denied naturally.
She said that her brother is a student in the same university, and asked me to take care of him, since we'll be in a long relationship now.
I asked the name of the student.She said that I'll recognise him with one of his very prominent quality.
He whistles a lot.
The moment the professor said this, all eyes in the classroom turned towards the boy who had whistled.
The professor turned to that boy and said,
"Young Man I didn't get My Ph. D in Psychology by sitting on my Ass."
😊🤓😍😜😝😜😍🤓😊