Des:My sister is a strong and cute fighter. She has a masculine personality and is always forced to practice martial arts. Perhaps sparring increases my sexual desire, my athlete sister straddles my dick and satisfies her overflowing desire in a powerful cowgirl position. I am truly a sexual punching bag... Days like that continued every day, and I was so horny that I forced my sister to understand with a violent piston and ejaculated over and over again until she came to an orgasm!