Clothed HJ Expert Counts the Ropes

When he took in his sister after she was out of her apartment for not paying rent . She managed to naturally insert herself into her brother's day to day activities . Including strangely enough , after a stretch of time was masturbation . One day she accidently intruded on him in mid stroke and quickly closed the door . Not a word was spoken of it . Then she brought up if he wanted . . . He could use her hand on his dick. Placing his hand over hers and guide her up and down his length till he popped. He came super fast with her softer hand working him beneath his . Then after from time to time she would help him out by jerking him off and he would record her efforts . Her she was just before heading off to a job interview . I'll jerk you off for good luck she laughed .

Yeah, some decent spurts.....but I'm not sure of her counting ability ?!