When I told my sister, who is over 40 and worried about her beauty, that she would become younger if she jokingly drank sperm, she believed it and started asking for sperm from her brother. She had no choice but to jerk off, but her brother was having trouble, so she gave him a handjob to help him out. She gradually became excited and even ended up giving him a blowjob... Even though it was her brother, it had been a while since she had seen his dick, and her sister was so excited that she pulled his dick into her pussy...