[After a brief scuffle amongst Batman and the Joker and his men, Joker grabs a gun, puts it to Rachel's head and moves in front of a window]

Drop the gun.

Sure. But first, why don't you take off your little mask and show us all who you really are. [shoots the window behind him and hangs Rachel out of it]

Let her go.

Very poor choice of words. [Laughs maniacally as he lets her fall]