Dr. Barkov.

Said when a conman misunderstands a name.
This word(s) is best said in a Russian accent or by Marco Marino. It originates from a comedy sketch about a conman by the troupe in Visually Impaired Placenta.

(From the script:)

Chief Conman: Dr. Barkov...
Herbert: But my name's Herbert.
Chief Conman: (Pause) Dr. Barkov... do you know where you are?

(And so the script goes on)