... well, it's hard not to take Watson in his arms and carry him off to the bedroom when he talks like that. He does have a weakness for Watson when he's being particularly lewd just because it's such a striking contrast to his usual friendly self, and it reminds Holmes of how deep Watson's passions run.

"Oh, to be certain, especially since you are so unrepentant about it all." He gives a heavy sigh, shaking his head. "You would be very sad indeed come tomorrow morning." He smiles now, slowly, feeling very much like the cat he is in this relationship. "But thankfully I am not the usual sort of Father Christmas, and your kind of naughty behavior is precisely the sort that will get you presents on Christmas."