DM's who want you to Roleplay but can only say "No."

[Nagash]

I've been in situations where players essentially say 'Bow before me, for I am High Lord of Something, and kiss my feet. Else you suffer', and keep true to their promise. It is realistic, but...

Has any one encountered this kind of DM?

players like the characters say that to an NPC? If so how does it involve the DM?