She is a good girl (Velma Scooby Doo cosplay) and showing her panty accidentally forgettiing she is wearing a skirt. Suddenly she realizes and starts teasing  you. Invites you with her eyes to go out of the class with her. Once in her bedroom she  told you how excited she is and that she' d like to try her fetish with you. Would you let her masturbate on  your face and cum over and over?
She keeps going playing over and under panty  with vibrators and fingers until she is satisfied. Lot of wet noises and moaning