I asked my older sister, who is famous locally for being easy, if I could have sex with her. To my surprise, she immediately rejected me saying 'No way.' Not willing to give up, I negotiated, 'It's okay if you keep your panties on, just let me do dry humping.' Feeling sorry for me, my sister reluctantly agreed! Overjoyed, I rubbed my dick all over her panties. Of course, it felt better than masturbating, and I ended up cumming a lot! I thought 'Shit, I'm gonna get in trouble,' but when she saw the semen, my slutty switch turned on. She took off her panties and said, 'Why don't you try putting it in?' transforming into a slutty woman begging for my dick!
