Advanced East London Infiltration Techniques: Social Engineering

Scene: The Bunker.
Front door intercom: BLEEEEEEP!!!!!!
Me: GAHH! What the hell was that?
Intercom: BLEEEEEEP!!!!!!
Me: Christ! That door-thingy works after all. Who could be calling at this time of night, I wonder?
(Fumbles with intercom buttons)
Me: Hello?
Master Criminal (on intercom): Uhhh... can I come in?
Me: Who's this?
Master Criminal (on intercom): Oh, ah... it's, ahh....
Me: Hello?
Intercom: Click!
Fin.