Gracie "Wanking Bonus"

Gracie wants to leave work on time today but you want her to stay behind and clean up, she wants to know what she can do to change your mind and you decide to take full advantage of the situation. You tell her that if she strips off for you she can leave on time, Gracie can't believe how much of a perv you are but she agrees to do it knowing full well that she will have something to hold over you next time she wants anything.