I enjoy videos where the woman is so well-fucked she actually becomes physically and mentally dysfunctional. I saw one where two ladies were getting fucked doggie side by side and one started to completely lose it. It was almost as if she were having a stroke. Eyes all messed up, rolling back into her head, mouth open and distorted, skin turns red, sweat pouring down her forehead, drooling, making animal noises. Her friend, who could see this, got turned on and started to go to, but not quite as bad. I like these videos especially if there is a build-up where the ladies look very much together and in control. I like the contrast.