NIGHT CLASSES

During work, Ravin and David were chatting:

Ravin: Narain, I've been attending night classes for 5 months now and I have an exam next week.
David: oh!

Ravin: For example, do you know who is Graham Bell?
David: No

Ravin: He's the inventor of the phone in 1876; if you take night Courses you would know this.



The next day, the same discussion took place:

Ravin: Do you know who Alexander Dumas is?
David: No

Ravin: He's the author of "The 3 Musketeers", if you take night courses, you would know this.

The next day, once again:

Ravin: And do you know who Jean Jacques Rousseau is?
David: No

Ravin: He's the author of "Confessions", if you take night courses, you would know this.

This time, David got irritated and said: And you, do you know who is John Von Stanley?
Ravin: No

David: He's the guy who's screwing your wife!! If you stop night courses, you would know this.