It's an interesting camerawork solution, with the camera inserts that the guys are holding themselves. You look as if through their eyes at what is happening and very realistically imagine your dick in one of the holes of the slutty brunette, though the overall picture is not lost, and there's a lot to see here: a beautiful girl caught, skilled. And the guys are lucky, and us, the audience.
Look at the stepmother's face when she realized that all that time she had been sucking his dick not to her husband!