1
As the end of summer neared, James was preparing to go off to college all the way across the country. He was excited but nervous and a bit sad to be leaving his mom and me. We had become so close and James knew he'd be hard pressed to find a situation like ours in Boston.
We tried to reassure him and his mom was very open to giving him lots of sex to help tide him over until he could find someone to date and fuck on the east coast.
I came home from work to find them in the living room. Both were naked with Kathy on her hands and knees, James behind her with his cock sunk to the hilt. Grunting and straining into her as she moaned and screamed for him to fuck her harder.
My cock grew hard as I watched my little sisters tits swing back and forth with every thrust her son made into her hot pussy.
I quietly removed my clothes as I watched.
My sister moaned, "James I'm coming. This is the third one. Are you close baby?"
James sped up and started grunting with the rhythm of his thrusts. "Yeah Mommy I'm gonna shoot deep inside of you. Uh here it comes."
"Your cum is so hot James. I love it when you squirt into me like a firehose."
"Jesus." I said, holding my dick tightly in front of me.
They both looked over at me as James slid his dripping cock from my sister's snatch, I saw her drip a big gob of goo onto the floor. It pooled on the hardwood as she hung her head down in exhaustion.
'Oh' I thought, 'I doubt she's going to want to help me with this.' I squeezed my aching boner.
Kathy took a breath and looked at me.
"My pussy's pretty sore Billy. James has been going at it for quite some time. I love his stamina. You wanna tit fuck me if I lay back on the couch?"
"You don't have to sis." I said.
"I know when you watch me and James fuck, you get really worked up and need some relief. Come fuck my titties. Give me a pretty necklace."
Kathy wiped the goo up off the floor and painted her chest with it. I spit on my hand and lubed up my cock.
We came together at the couch and I rested my dick between her tits as I straddled her with my knees.
"Thanks Kath. You knew how much I needed this."
"It's OK big brother. I love you and want to take care of you the way you do for me."
She squeezed her big breasts around my throbbing member and I started fucking those beautiful tits.
"Give it to me Billy. Come on me. Fuck my tits and come all over your sister."
"Oh god honey you're so hot. So good to me and so hot. Oh aaaah."
A gush of my come washed over her neck and she giggled at the feel of the warm cream shooting onto her.
"Wow you really love my Mom don't you Uncle Bill? I can tell by the way you two treat each other. You act the same way she and I do and I love her more than anything."
"You don't have to worry about your mother not getting enough when you go to the east coast. She'll be sleeping in my bed and I'll do my best to take care of her the way you do almost every night. I love listening to you two love each other. Such pretty sounds you both make. I can hear the love you have for each other too."
2
At Sea-Tac airport James and I shook hands and then gripped each other in a tight hug. "I'm glad we came to stay with you and we all ended up moving in together." He said.
"Me too James. It's been quite a summer hasn't it?"
Kathy grabbed James and hugged him like she wasn't ever going to let him go. "Miss you." She sobbed,
"Miss you too Mom. And I love you. Christmas break isn't that far off."
Kathy just sniffed with a teary face. To James I said, "Go. Learn things. See you at Christmas break."
"Bye." He said, waving and toting off his carryon.
"Well that's that. Just you and me now for the next few months." Kathy sighed.
We headed home and I said to my sister, "Kathy tell me what you need to feel better tonight and I'll do it. Hot bath, glass of wine, maybe a shoulder rub."
"I'm going to need it in the butt tonight Billy."
I burst out laughing. "Is that before or after the bath, massage, and wine?"
"Oh fuck all that other stuff. I need to feel your cock in my ass. It always makes me feel so close to you."
It was time to eat dinner when we got home from the airport and then it appeared to be time for bed.
Kathy led me to my own bedroom with the pump bottle of lube in her hand. She put it down on the bedside table and started to undress me. My dick was hard by the time I was naked, I then loosed her clothing and removed it lovingly.
Kathy bent herself over the side of the bed with her beautiful ass open and winking at me. I reached for the lube and squirted a ribbon of it down her crack.
As I rubbed it in to get her tight pucker lubed and relaxed, I said, "Remember when we first moved in here and we cleaned house one Saturday?"
Kathy was grunting softly as I fingered her tight asshole. "Yeah?"
"When you bent over the arm of the couch and James got behind you and got ready to fuck you in front of me. That's the first time I really saw that big cock of his." I squirted some more lube onto my hand and shined up my prick then put the remainder in my sister's butt. "I'd been in your tight pussy by then and wondered how you two managed to fuck as much as you do without him tearing your snatch in half."
I positioned myself behind Kathy and pressed my little head against her little pucker. We both moaned in pleasure as I slid slowly into her.
"Uh. Oh that's it." My sister grunted. "My tight pussy doesn't just happen you know? Oh fuck you're so hard. I do Kegels all the time to stay tight for you guys." She moaned.
"Ung, oh fuck sis. That's really nice of you. Mmmm it's so tight in your ass. Where did you learn about tightening your pussy?" I asked as we caught a good rhythm.
"Ung ah, Daddy taught me."
"Ooooh. You. Ah. Say what??"
"Our father used to come to my room and fuck me once or twice a week after I turned eighteen. Oh Billy I'm coming just thinking about those nights."
"Sis I'm going to blow. I'm going to shoot cum into your ass. You and Dad were lovers? Oooooh."
I sprayed my little sister's bowels with a big load of sperm as her ass tightened around me during her orgasm.
I pulled my still hard dick out of my sister's ass. "Aaaah" She said. "That's as satisfying as taking a good big poop."
"Mark Twain said, 'A good shit is as good as a good fuck'" I informed her. "I think he might have been speaking of curse words but it does work for body stuff too."