Well, the woman does not look like a naive fool, who does not understand why she was invited to a man's apartment! And by the looks of it, let's say she is not poor - dressed well and not cheap lingerie! Apparently just love to fuck and not against a little adventure with an interesting man! For this theory, and says strongly developed anus, which clearly sparkled when she was bent over.
They know how to create the mood of such simple chicks - they jerk off, lick, suck balls. And then they'll let her in the asshole. And you want to fuck her and call your friends. Cause eventually she's gonna be a bitch. It's better to make her like that than to have her go around without permission. She's not even embarrassed by the camera - on the contrary, she even jerks around better in front of it to make her asshole better visible.
Lusty brother pleasured his sisters, and they only had time to set their holes for maximum pleasure.