The sounds are what make the spanking good, I notice. It's fascinatingly erotic to hear her grunt, and then cry out, and eventually hoarsely bark when the pain completely overtakes her mind.

I start slowly and gently, of course. My mom's ass is a glory, and I take plenty of time to feel every curve, every smooth inch of her, from the firmness of her sports-trained glutes all the way to the softness of that place below where her cheeks meet, inside her thighs.

But it has to be done. Because she needs it. Needs to know that a slut deserves to be punished. Especially a slut of a mother,...