your sister finds you and she is naked. She tells you that she knows you have been sneaking peeks of her naked body and so she wants to have some fun with you. She says she will do anything to show you how sexual things work and some medical importance with a woman's body for sexual things. She pees on the floor for you, fingers her ass and tastes herself before spreading her pussy and showing you how it can change in size with arousal and how with a dildo she can stretch it out and try to gape it for you to see inside of her tight pussy