Charlie has found you hiding downstairs, you have signed up for an experiment to help you out with your chronic masturbation but they need you to masturbate twenty times a day. You have already done it fifteen times today and you don't feel like you can take much more. Charlie decides to offer you a bit of encouragement for number sixteen by stripping off and giving you something to wank over, it doesn't take you long to get hard again when you see her impressive tits and shaven pussy!