1
There were three beds in our new small house. My sister Kathy's divorce had finalized a month before and she and I went in together on it. It was not far from the small apartment where she and I and her 19 year old son James had been staying.
Our family loving had continued while we waited for financing for the house and while we were moving. Mother and son had stopped closing the door of the only bedroom in the apartment and I could hear them making love most nights. The sheets of that bed got washed frequently since most of the mornings after my nephew left for work, I would go in and my sister and I would have a quick fuck.
After hearing the activities of the evening, I would be so hot for my sister's tight pussy that I would come inside of her fairly quickly. It was OK with her since we both had started back to work after their first week staying with me. We didn't have time for slow screwing.
We would usually shower together and rub our wet bodies together for a bit. I loved how her wet tits felt against me and Kathy would sometimes rub herself to orgasm by straddling my leg just above the knee, moaning and panting into my shoulder with one arm around the back of my neck.
I loved my sister and my nephew and wanted to become a family with them. A less typical, loving, incestuous, kinky, oversexed family. It seemed that my sister and her son felt the same way I did.
After a couple of weeks in our new abode Kathy woke up on Saturday morning and came out of the bedroom that she and her son James shared.
"God this fucking house is a mess," She said. "I'm going to clean it to within an inch of its life."
James and I looked at each other and I could tell that we both wanted to bolt. That not being an option, I volunteered to clean up the kitchen and hinted that if James could clean the two bathrooms 'very well', we might live through this early summer cleanup. My sister smiled her thanks for my help.
Being early summer in the Northwest, the weather had turned warm. Our new little house was private, no close neighbors and a six foot board fence around most of the yard. We had already relaxed the dress standard and James and I had taken to just wearing our boxers and T shirts around the house and Kathy had traded in her heavier robe for one of James' t shirts which fitted her lithe body like a short dress.
Kathy's tits were obviously free and bobbing around as she re-arranged things around the house. A few low bends to pick up things from the floor told both of the men of the house that she had neglected to pull on a pair of panties too. I was finished with the kitchen and James had done the bathrooms at least to his satisfaction. Kathy had finished with the vacuuming and was just putting the finishing touches on the living room.
Kathy had just put a throw on the back of the couch and had leaned in to tuck it into the cushions. James and I were watching the show and both of our tented boxers showed how much we were enjoying it. Kathy stood back and surveyed the position of the throw and saw how the end was still untucked.
As his mother bent over the arm of the couch, James jumped up and stepped over behind her.
"Mom, I can't stand it anymore. You've got me so turned on. I need to fuck you now." He pulled the shirt that she was barely wearing up above her beautiful tits.
"Oh baby, you're going to fuck me right in front of your uncle? You're so naughty." As James pulled down his boxer shorts I got my first good look at his prick. James really was a big boy. He stepped out of his shorts and snuggled up behind his Mom.
I watched in fascination as my sister reached down between her legs and guided her son's cock to her wet snatch. With a moaning grunt, my nephew slid his sizable cock into my sisters willing pussy.
I kept my shorts on as I watched Kathy and James start to fuck each other. He reached around her and put one hand on her belly near her navel. The other hand went to one of her swinging boobs. Kathy reached down and started rubbing her clit.
The noises that they made had me hard and dripping in my shorts.
"Oh James," moan. Slap squish.
"Oh Mom," grunt. Squish slap.
They sped up and my sister's moans were coming with more frequency.
"Baby I'm gonna cum. I'm Cumming. Oooooh.
"I'm getting close Mom. I'm going to fill your pussy with my juice right in front of Uncle Bill."
"Do it James," I said through gritted teeth.
"Aaaah." James sighed as his come shot into his mother's vagina.
They stayed there, bent over the arm of the couch until his cock finally became flaccid and slipped out.
"Did you like that Billy?" Asked my sister.
"Kath, I'm so turned on right now. I'm about to pop. Can I fuck your tits please sis?"
Kathy stood up and pulled the t shirt off over her head. She folded the shirt and laid it on the front of the couch cushion. She turned and sat down on the shirt hoping not to stain the couch. Cupping her snatch, she pushed some of their goo out and slathered it between her breasts. She pressed out another dollop and added it, making her tits shine. She held her 36 double Ds together and said, "Come and fuck them Billy. You love my titties so come here and love them properly."
I just about tripped and fell on my face since my boxers were around my ankles as I stepped toward her. My focus solely on her shining chest.
My sister loosened her grip and welcomed my cock between her breasts. She then squeezed them around me and I had no choice but to tit fuck my sister while her son watched the whole thing through sleepy but still excited eyes.
"Fuck my titties Bro. I bet you've wanted to for a long time."
"Kath, I can't hold it, sis I'm Cumming."
She looked down at my cock just as I shot a gob onto her face. Kathy raised her head and I coated her neck with the prettiest pearl necklace.
"Wow Uncle Bill, you really come a lot for an old guy."
"Well fuck you very much James. I want to be around to insult you when you turn 41."
"Sorry, I didn't mean it like that. I'm just glad that you'll be here for Mom when I go off to college this fall."
"Yeah I guess you won't be coming home from Boston every night to give it to your mother. I'll take good care of my sister, don't worry.
"Oh I'll miss you so much baby. I love Uncle Billy and we have a lot of fun but you're my baby boy and you do me so well. I love the taste of you in my mouth just before you shoot and the taste after you do."
"Oh shit Mom, I don't think I can get hard again after fucking you from behind like that."
"I wasn't asking for that. I was just thinking about how much I'll miss blowing you and having you inside me and just sleeping with you cuddled up to my ass."
"Well he's not gone yet. We have a whole summer together still and he'll have Christmas and spring break and all next summer with us."
2
"But what will I wear to a thing like that?" My sister asked the room at large.