[Pull the rope/shoelace then stroke the shaft 50 time]
The mistress unties your arms and you fall on the floor. She orders to stroke the shaft while is standing above your head, putting aside the thong.
MISTRESS: Look my forbidden pussy and stroke. A pathetic slave isn’t worthy to get it.
YOU: Fuck you!
MISTRESS: Hmmm, you need an encouragement… Here is it!
She pulls the rope and your genitals are stretched the flash of pain is enough to persuade you to jerk.
MISTRESS: I like that. Maybe we can repeat this pleasurable, for me, task.