Looking for a story

I recall reading a story where a woman ties up a dominant man who had tickled her in the past. I think it was a challenge/test game. She puts a baby's rotating toy above his face, but the toys are replaced with feathers that dangle onto his face. Then she turns on the machine. For 30 minutes it rotates in one direction, but he is able to maintain control as the feathers tickle his face, but then the machine switches to random, back and forth rotations and he loses control. That is the warm up to a longer story. I can't locate the story anywhere. Does anyone have a copy or remember where it was posted?

JerryB