Merlin's voice, low and close and commanding, combined with the familiar sound of an opening zip, both teamed up to work their Pavlovian magic on Luna's libido. The sound of desire she made was not entirely intentional and she shifted herself quickly so that she could be straddling his lap, lifting enough to drag his pants down enough.
"Anything for you, sir."
With her hand on Merlin's cock to stroke him to hardness, Luna kissed him deeply, her other hand at the back of his neck to keep him close.