If the sister does not go to Mohammed, Mohammed goes to his sister. His half-brother had his eye on his sister for a long time, and she was playing the innocent chick. Only when he took his dick out of his pants did her eyes open to the fact that he could make a good lover. Yeah, and her pussy was leaking before she came to her senses. And what happened was, she took it in her mouth. So females only resist for the first few minutes, until the front starts dictating their will to the head.
What else are sisters for? They're just for my brother to practice on her, to relieve his tension. Then he could achieve something in life instead of hanging out in dubious companies. And the sister won't be shortchanged.