"It's really silly, my fetish," I say, making significant effort to allow embarrassment into my voice.  I drop my eyes from his as if ashamed, though I've had this conversation a dozen times before.
"Nonsense," he counters, smiling patronizingly.  It's there to read in his face: already he is fantasizing that it must be something predictably male.  His imagination takes hold of him and he surmises I must be dreaming of a threesome with him and another woman.  Uninspired.  The truth is far more perverse.