For that matter, I'd rather have her in a 69 position, it'd be more interesting for both of us! By the way, she did a good job on the cock, too. Probably imagined herself as a cowgirl, and her shoes as spurs, which she used to ride the stallion! When she laid down on her side, her shoes disappeared, so the ride was over? Apparently the movie was filmed in several stages, and we naively believe that the male is so hardy and can fuck a lady for a long time and not cum!
It's a turn-on when you look at a young, beautiful couple. The girl couldn't take it either and decided to keep up the company, with everyone enjoying themselves each in their own way. Beautiful sex.