John's Mother has completely had it with his chronic masturbation!! His grades are slipping at school...his chores are not being done....he masturbates all day every day!! When Mom walks in and catches him yet again....it's time for drastic measures. Mom puts John's cock in a Chastity Device, and tells him he must remain in Chastity for three days while she goes out of town. John is ashamed....and angry....3 whole days without masturbating.....how will he survive???? To make matters worse....much worse....Mom leaves the key to the Chastity Device with his Baby Sister, Katie!!! Every day after Mom leaves...John tries in vain to ejaculate...but the Device will not permit his cock to get hard. Every day...his Sister Katie Teases him by dangling the key in front of him....and wearing short shorts, and bending over in front of him. On the third day...while his Sister is Teasing and Taunting him yet again...John breaks down...and cries and begs his Sister to release him. Katie begins to feel sorry for her Brother...and after all....she did make things worse by Cock-Teasing him....so Katie makes a deal with her horny Brother. "OK...I'll open the lock and let you out...but you have to promise that you'll Jerk-Off quickly...and then I'll lock it back up....and Mom can't know that I let you out". John readily agrees....but as soon as Katie lets him out....instead of masturbating...he attacks her!! Poor Katie is mauled by her Cock-Teased Brother as he Violently shoves her down on the bed...and before she knows what is happening.....her Brother's rock hard cock is inside her Pussy...and Pumping her hard. As John Pounds away at his Little Sister...Mom walks in and sees the Siblings engaged in sexual intercourse. Katie screams for Mom to help her...but when Mom finds out that Katie had Cock-Teased her Brother...and had let him out of the Chastity Devise....Mom tells Katie that because she was such a Cock-Tease...that she must lie there and suffer....and let him finish!!! With Mom watching, John Fucks the Stuffing out of his Baby Sister until he cums. Katie is in tears after being Brutally by her Brother...but her Mom tells her that she got what she deserved!

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