We know how much you like to play with your nipples so today that is what you are going to be doing all day long, when one of your hands is not doing anything you will need to take that hand and play with your nipples, rub them, pinch them, pull on them. In fact you will need to go to the bathroom every hour on the hour and open your shirt and pinch them both hard for five minutes play with them rough pinch them hard squeeze them, this way when you get home they should be super sensitive and if your lucky your Mistress will test them to see how painful they make you feel and they better be red from all that playing all day.