I asked my locally famous promiscuous older sister if she would let me have sex with her, but she flatly rejected me with a "no way." Undeterred, I negotiated with her, saying, "It’s fine if you keep your panties on, just let me dry hump." Feeling sorry for me, she reluctantly agreed! Overjoyed, I rubbed my penis against her panties, which felt way better than masturbation, leading to a huge ejaculation! Worried I'd get scolded, I was surprised when seeing the semen switched on my sister’s promiscuous side. She took off her panties and provocatively asked, "Want to put it in?" transforming into a nymphomaniac eager for my penis!
