This brunette is very bright and liberated, and it's a pleasure to have sex with these kinds of girls. The fact that she has developed her anus like that and then moves it on her own at a brisk pace is rare at all. If she moans sweetly, it means that she gets a high from it, and not just does the job.
In fact, it's a proven fact. No one would refuse such a training session on boxing, see how she was furiously sucking his big dick, and she seems to be enjoying it as well. In general I think that such a fuck will be a norm for them now, because they are unlikely to stop at the received emotions, they will want more and more, and there more and more, we just have to watch.