this is tease and denial.
i want you to put on music. it can be rap hip hop country whatever. now strip dance to it. i want you to do it slowly.
i want you to go get me a dildo and vibrator. when you get back set them aside and sit in your computer chair.
now sit back and relax. stretch your legs wide open. use your hand to rub your pussy. rub it slowly at first and speed up.