I let out a big moan letting her know it was so good. She then oiled my cock and jerked me off. This made me cum within 5 mins. I unloaded my thick lo...ad into her mouth.She then looked at me and told me: 'Your cock tastes much better than my husband and its bigger than his (my father in law)I was so filled with lust that I started kissing her even though she had my cum onto her lips and in her mouth. I started kissing her, started to eat her boobs and I started licking her pussy n ass n savoring. “Yemmmfffff,” I mumbled into her mouth. I watched, fascinated, as Caitlin slipped one hand around Riley’s body and into the gap at her neckline, reaching inside to fondle a nipple. Riley moaned into my mouth.“Two last things,” Caitlin said, continuing to play with Riley’s boob, making the teenager squirm. “You can’t fuck me, Mark. I told Steve no fucking, and I have to keep that same rule for myself. You guys can eat me, I can suck you and eat Riley, you can fuck Riley, but no fucking me.”“OK,”. I hear you moan softly, "Mmm... laundry." I keep massaging your ass, "Keep going," As you bend over I take a step closer, and rub your pussy with one hand. I hear you moan again as my fingers find the entrance to your pussy before gently rubbing the edge. I wait until you grab the next set of clothes before sliding my dick inside you. I feel you tense as a louder moan escapes through your lips, I run my hands up to where your hips flare out, and grab on firmly as I continue to thrust in and out. Then she would join me in the bathroom while I scrubbed down. She'd sit on the toilet or the sink counter and we'd chatter away.It was around this time, about two or three months into my full nudity around her that I began to wonder if my mom was being tolerant of my nudity simply because she wanted me to feel comfortable around the house. I began to suspect that she might be getting a thrill out of my exhibitions. Up till then, I believed that we had never crossed overt incest boundaries, but,.