The father clearly raised his daughter - Dad is the main thing. You could always find support and encouragement from him. And to suck his cock is just a thank-you for having him. By pulling her on his cock, her father showed how much he trusts her and that secret will be with them now. And the chick did a great job - and daddy is happy and she's even closer to him now.
It's a tough job as a stripper. The ladies just go crazy for his dick. Each wants to hold it in her hands, jerk it off. Shove it deep into her mouth. The really bad ones don't stop there. They throw off their panties and put their hole under the hard cock. And all this happens in front of everyone.
Great, I want to do it too