Marvolo smiles, rubbing at the spell-bound flesh, thinking of how Harry’s going to flush as red as can be when he sees this fucking of him: a large cock in his dripping hole, a hand rubbing at his cock as if it’s a clit instead. Feminising him appeals -- if only for the control he would exert in doing so -- and Marvolo vows to think upon it more, later. For now he works his little consort up, towards the edge, and then stops.