You can't trust blondes. She's willing to give her brother a new haircut between her legs just to be appreciated. I understand him - it is impossible to break away from such a body, even by force of will. And then we wonder why some chicks don't give it up on the first date. It's because they have brothers who string them up before they do!
The sister is really very horny, to get her brother into bed like that, it would have to be such a hen. Although in principle the brother is also particularly pleased with such sex, because they fucked just amazing and that can not take away from them. Although I think that such a mad fuck they will have more than one time, we can only wait and see, because she 100% dreams of his thick cock.
Why don't you put it all the way in?