"Nil Duffer" joke

Once a canditate went for an interview. Manager: What is your name?
Canditate: Sir, N. D.
Manager: What?
Canditate: I mean Nishant Das
Manager: What is your father's name? Canditate: Sir, N. D.
Manager: Again?!!
Canditate: Neelesh Das.
Manager: What is your fathers occupation?
Canditate: N. D.
Manager: Now what is it?
Canditate: Sir, he is a News Director.
manager: Where is your native place?
candidate: Sir, N. D.
Manager: What is N. D? Are you in your senses???
Canditate: Sorry sir, I am from New Delhi.
Manager: Did you work anywhere before? If yes, where.
Canditate: Yes sir, I worked at N. D.
Manager: Oh God!!!!
Canditate: Sir, I mean to say that I worked in Naval Department.
Manager: ( keeps silence)
A few seconds later
Canditate: Sir, what do you think about me?
Manager: N. D.
Canditate: Oh really!!! What is it??
Manager: NIL DUFFER!