'" Cat litter."It was her turn to ask, "What!" I said," this time slightly louder to be heard over the band," "'Cat litter.'"Laughing, she kissed me o... the cheek. "Speaking of which how is your article coming?" Not too bad. I'll finish it tonight if Fred and whoever she is," I made the appropriate gesture toward the pre- occupied couple next to me, "don't make too much noise and her boyfriend doesn't show up at our place looking for her."Shelly snuggled against me. I wrapped my arm around her. Well of course but hard not to cum when being fucked for forty minutes. And unlike her husband, Brian was chock full of energy. After his mother’s third orgasm her legs were getting cramp. She climbed off his cock reluctantly and then licked it clean, thinking maybe the perverseness of a mother licking her own cum from her son’s cock might trigger his orgasm but it didn’t. She needed help.She called his sisters into the room. All the colour in Brian’s face disappeared but she assured him it. She grabs the sheets and yells out a great moan. As I am fucking her ass I am grabbing and slapping her cheeks. Harder and harder with each smack. Soon her ass was red all over. "I love how you spank me but I hate to ask but can you please pound my pussy too?" She asked"Nope. Just ass tonight and if you ask again you'll be punished" I reply She didn't reply, just moaned louder and louder. "Jesus this feels great" she tells me "I just can't stop cumming, it's starting to hurt but god it feels so. For years now we had flirted with varying degrees of intensity as her marriage to my father faded. She became a prisoner of her desires which most of the time had to be poorly satisfied with a vibrator I bought for her as a brithday present and which she kept haidden in my room. I specifically chose a waterproof model that she could bring with her in the bathroom and pleasure herself as she showered. There came a timid tap on my bedroom door and she slipped in to retrieve the contraband.