Sister, let me show you how she sucks his cock

I Know that my sister is doing sex with the guy, even if my father does not allow it. I know that is so. I know the face of a whore when I see one. My only concern is that you do not know how to fuck well. No woman of my family can make us look bad in sex. When it comes to fuck, we are the queens. But since she is my half sister, you may not be in his genes to be a good whore. So when the guy came to the house, I spied on while humping. I have not been able to do anything when I saw that pathetic blowjob. I had to go in the room and teach my sister how to make a good blowjob. After this I stayed with them to teach you a couple other things.