As for me the lady is not very pleased with this kind of sex! The expression on her face never showed that she liked it. I think she would have enjoyed it more if she had served the men one at a time. And the two of them just bore her. Did the lady enjoy herself? I don't think she did.
Now the girls have gotten their hands on some hot dick - now they can't share it! They don't even ask their stepbrother which one he likes better. They're using him like an orphan dick!