Sister ties up brother and fucks him

Your older sister Addie, has been super horny lately, So she sneaks into your room while you are sleeping. She doesn't really care what you think because she just wants to get off. She even wears her Sexiest Bra and Crotchless panties. She sees that you already have ankle cuffs attached to your bed, she thinks you must have been using on your girlfriend. She attaches the cuffs to your ankles and pulls down the blanket, she sees that you are already kind of hard, she thinks you must have been having a wet dream.