Your sis drops in one day telling you she is serious and about to leave her husband. He won't fuck her, ever since she gave birth he has not came anywhere near her with his cock. She wildly horny, been thrashing herself with her first ever vibrator - but she craves a man's touch. She asks your advice and wants you to help her find some kind of escort so she can get a root, just one is all she needs and that'll fix it she reckons. When you lay down to help, she begins looking at escorts but tells you she wishes it could be someone she knows as she reaches over and grabs your dick and reminds you of that one time you both had overwhelming feelings of taboo lust and fucked each other's brains out with you finishing in her. She wants to be railed, fucked, implanted and rogered by your big sibling dick, shes got you in the palm of her hand, you adore her and willingly give her all she needs to patch up her marriage and get back on track.