Yes, I think it partly comes down to what fecil said – knowing she’d be enduring it for me is a big turn on. Also, the frisson of jealous outrage at seeing another man’s hands on your girl’s feet seems strangely exciting. I think there’s also an extent to which it transforms ‘your’ partner into a more generalised object of sexual attraction, in a direct reversal of the ‘that’s no lady, sir, that’s my wife’ dynamic. She becomes, just temporarily and in very constrained circumstances, an object of the male gaze. Those are my thoughts, anyway.
