I know it is frowned upon these days, but my family have always believed in physical punishment. My younger brothers and sister were spanked if we did something real bad. Now the other day, I got lippy with my dad. He was being an ass and I told him so. (Actually, I swore at him). He grabbed me and pushed me across his lap and flicked my skirt up. He said 'You're not too old for a slap.' And so saying, he hit my ass a couple of times. Hard. I wriggled a little and then he hit me again, and again and again. He had never done this before and it was into a kinda rhythm.
Then I felt myself suddenly and without warning, horny as all hell. I could also feel his hard-on through his pants. I grabbed the arm of his chair and as I felt myself getting close I said 'Oh stop. You're making me sore.' He hit me a couple more times and I orgasmed. In my panties right there. I also felt his cock twitching under my belly and I guess I made him shoot too.
I ran back to my bedroom and flung myself on the bed and cried a little. But then I got to thinking about it. I was wet as all hell and there was no doubt I loved having the cum and yes, I loved making dad cum too. I flipped over onto my back and masturbated with the image of him fucking me in my head. I had another really savage cum.
Later that night, I told my sister about dad spanking me and it making me feel horny. She told me that it does the same for her too. In fact, she sometimes gets him cross just to make him spank her! (I guess I am a slow starter) I asked if she masturbates too and she said that, like me, she thinks about him fucking her.
I got horny again and as we talked I slipped my hand between my legs. I think she was masturbating under the covers too because in a few moments, we both went quiet and started breathing heavy. I don't know about Sarah, but I cummed again.