ああ、神様!2人の淫乱、精液に飢えた義理の姉妹があなたの精子を吸い取ります。

Me and my stepsister can't get enough cocks, so we start betting endlessly. Who gets more sperm and whose cocks squirt first? The men only have one condition: a two-week ban on squirting in order to be able to squirt even more at the place of the bet. Which one of us has won?