It makes a sharp cracking sound when it hits skin, but it does not appear to be extremely painful. Just regular painful. I admonish Anna to hold her p...osition, and then I begin. At first, I only tap her lightly on her ass, which seems to me the safest target for now. Watching her reactions closely, I slowly increase the strength that I put into the strokes. It's not overly strenuous work, and Anna presents a beautiful sight. She is squirming now, erotically moving her hips. Seeing the leather. Always it is the hand that pleasures that also punishes. There can not be punishment unless that hand leaves her sex...He lifts his hand. She tenses slightly, knowing that she will be punished with his next touch. "You are a bad girl. Your cunt is wet." Slap! His hand stays on her, still for a few moments, then traces circles lightly, slowly, gauging how close to orgasm his beloved is. Then levitates. "You are a bad girl." Slap! Insistently it repeats. Her legs held open, her cunt out for him. They were movies like Taboo, Behind the Green Door, Devil in Miss Jones, etc, the Classics, only they'd been edited down to basically just the sex scenes and anything else that needed to "move the plot along". Anyway, while watching one of these one day I was occasionally rubbing myself through the swim trunks I was wearing. I'd been rubbing myself occasionally since, probably the first time I watched one of these movies. It felt good, but I never, for lack of a better term, finished the deed.. ”“Hurry, Annie, you feel way too good on me for me to last very long, it’s been a while.”“I know, Dad, much too long and all four of us will make sure you’re well satisfied from now on. Do it NOW, Daddy. Oooooh, you feel SO good shooting cum inside me.”I felt some guilt at first, then felt a little more after we had made love. But as we hugged and she kissed my cheek, I knew we had done the right thing. We really did need each other.When Annie rolled off me, I felt Stacy cuddle next to my butt.