My daddy never shows interest in my little sissy clit, although he sometimes holds it in his hand to show that he likes how small it is and that it's perfect for me.
As the dominant man that he is, he often spanks me hard while fucking me or suddenly on any occasion. Although it hurts a little and makes me scream, I don't think he does it to hurt me; I think it's a way of expressing how much he likes my ass. It's also a way of reaffirming that my ass and all of me are his property.
One thing I think isn't so common is that sometimes he hits me with his big, hard cock against my little balls and makes me scream. I think it's a way of reaffirming his sexual superiority over me. Although it hurts, it also turns me on to feel weak and defenseless in front of him.