My sister caught me masturbating, and I hurriedly hid it. She said, 'I know about that too! Should I do it for you?' To my surprise, she made such a proposal! I came instantly from the handjob! However, my still-hard dick puzzled my sister. In desperation, I explained, 'A handjob like that isn't enough to make me stop.' Then, my sister took my dick in her mouth. As expected, I came again from the blowjob. This time, my sister's expression changed! 'I guess we have to go all the way...' and she crossed the forbidden line...
