I do not know about the indefatigable brother, I think he got tired) Sisters certainly are all on the positive. The way they got caught by their mother and the brother hid, it was well thought out. But then when they went on and the mother, or whoever she is I don't know, was sitting next to them, I didn't understand why they did that. It was nice to watch, especially the sisters, the brother was kind of passive in the clip, he was almost never even shown.
I've seen a lot of things, but I've never seen group sex on stage before. And the most amazing thing about it is that there are no bored faces in the audience! Everybody likes it! Well, direct participants are twice as pleasant: they suck your dick vigorously and the approving attention of the audience. The final chord, bukkake, is so organically blended into the atmosphere of the evening that you cannot help but wonder if it could have ended differently!