Nikki was only wearing a towel and I said that I wanted to see her cunt and arse hole again before I left. She smiled and dropped the towel for my in...spection. Her cunt was still swollen and red and her arse hole looked like she had recently been gang fucked. I could not help but kiss them. I gently licked and probed her holes until she came gently and quietly. Then we kissed deep and long. I had to stop then otherwise I would have gotten aroused again.As I was ready to leave there a knock. SLAP! And again, SLAP, SLAP, SLAP!!! Katy was indeed not happy with me, but as I added slap after slap on her exposed cunt, she finally relented, and gave up her struggle, only to discover that it actually felt kind of good when she relaxed: hot and stingy, but arousing nonetheless.When I felt that her pussy showed just the right amount of pinkness, I put the strap down and lubed up the monster cock that I planned to feed into her highly stimulated vagina."Uncle Billy! You don't think…you. ...Guys say I say that I have that wholesome, girl-next-door, look.But even though I act prim and proper so that no one would suspect -- surprise! -- I spend more time having sex with men during the week than in doing housework.Kathy has indeed been lucky in not getting caught in her dual life.Sooner or later that luck will run out, and if her husband is like most, divorce will follow.However, I should mention that a few husbands find out about their wife's activities and encourage them to. It hurt so much it brought tears to my eyes. He used no lubricant and his penis was dry. The friction against me made me feel like he was ripping me open. I swear that I thought he was going to push through to my stomach. It was such a weird feeling. I felt full but for all the wrong reasons. I couldn't move, I couldn't run away, I could do nothing except allow this stranger to violate me in a way that our bodies were not supposed to be joined. Suddenly I heard him groan and then I felt warmth.