Mom and dad got back a while later and found us playing super smash brothers in the front room. Mom seemed pleased that Cindy kept an eye on us, but she had no idea how naughty her daughter was. Hell, if Cindy had her way, we would have fucked.
Mom and dad brought in crab legs and lobster tails. It was a family favorite. My mom would do the crab legs, boiling them in seasoned water, while my dad manned the Lobster tails on the grill, probably using way too much butter, but it tasted good enough we never cared.
The rest of the day was spent preparing. Mom said since the school wasn’t doing anything fancy for graduation, we had to. Grandma would be here and so would Aunt Jane. There were streamers and balloons and every graduation decoration you could think of, and being the tallest one, I was tasked with putting most of them up.
By the time it was lights out, I flopped into bed tired. Even tired, as I was, it was hard sleeping alone. The number of nights I didn’t have at least one of my girls in my bed were rare indeed. So being forced to sleep alone was still weird.
A few minutes later Courtney texted me. “I gather from your earlier look that you wouldn’t even consider relieving your sister of her burden. Why?”
I thought for a moment, “Well, first off, she’s my sister. That’s incest and is illegal. Secondly, she isn’t part of the harem. And thirdly, I’d just increase her desire for sex after we left. We’re going back to the university and she’ll be going to who knows where for college. It’s not a good idea.”
“If she wasn’t your sister, would you do it?” Courtney pressed.
“No, if Mary came over, spread her legs and begged, I wouldn’t. She isn’t part of the harem and I’d be leaving her in a worse circumstance than when I started,” I insisted.
“Okay, I love you,” Courtney replied.
“I love you too,” I told her, wondering what that was all about. Courtney couldn’t really want me to fuck my sister, could she? I dismissed it and went to bed.
The next day Cindy had to be ready really early and my grandma and aunt came over before noon. Courtney and I talked with my aunt and grandma while my parents went to drive through graduation.
Just before the ceremony was to start, Cindy sent me a picture from the bathroom at her school, she was in her cap and gown, with her gown pulled up, her skirt pulled up, and her panties pulled to the side. She had her vibrating butt plug in and was spreading her pussy with one hand, showing off her hymen.
“Carrying your gift with me to get my diploma, and here’s proof I’ve made it to graduation without letting any of these diseased losers get anything from me,” She captioned the picture. “Can’t wait to see you plow Courtney’s holes later!”
I got a drink, winking discreetly at Courtney, and showed her when she joined me.
“Good for her!” Courtney chuckled quietly.
My aunt and Grandma loved Courtney. She was clever and beautiful, and they thought she was great.
When Cindy and my parents got home we celebrated with Martinelli’s and cupcakes. Then Mom and Dad disappeared into the kitchen to make the seafood dinner.
“Now, Tom,” my Grandma chided me, “You’ve found a nice young lady here, why haven’t you proposed yet?”
Courtney and I laughed, “We’ve discussed it and I will propose after graduation, assuming she still wants me. I don’t want to rush things and end up divorcing.”
“Not wanting to divorce is good and all, but the solution is simple. Do what your grandfather did!” Grandma laughed, “Every time we had a fight, he just gave me what I wanted.”
Aunt Jane lightly slapped grandma’s knee, “You know Dad won plenty of fights.”
“Now here’s the trick for you, young lady,” Grandma laughed again, “Pick throw away fights you don’t actually care about in public and then make him make it up to you in bed!”
“GRANDMA!!!” Aunt Jane exclaimed in horror.
“Oh, shush dear! How do you think you got here? I mean I used to have a caboose that drove your father wild, but making up in the bedroom gave you most of your siblings!” She winked at Courtney again, “You’ll never lose a fight you actually care about and you get to have some fun to boot!”
Courtney was laughing hard. “I should be taking notes! A master is speaking!”
Grandma cackled, “Just be careful on the wedding night, dear, his grandpa was hung like a horse, and his father got that straight from the source. With any luck, this young buck will have gotten the family goods and you’ll be walking bowlegged for a week!”
Aunt Jane was beside herself, but the rest of us were laughing.
“Grandma, be good!” My mother called from the kitchen.
“Oh, my hubby was good alright,” she laughed more quietly.
Dinner was amazing. Grandma struggled with her crab legs, so I spent almost as much time helping her with them as I did eating.
“These are amazing!” Courtney gushed, “You’ll have to teach me! I’ll buy them next time and you’ll have to teach me how to make them!”
Mom and dad glowed with pride, “I’ll never turn down a chance to have another home cooked seafood dinner.”
Courtney laughed, “I might even have the food flown in from the coast! You can’t beat fresh seafood.”
“Now, dear, that’s nice and all, but do you have any idea how much that costs?” Grandma chided her, “You’re just starting out but once the bill’s catch you, you’ll be lamenting spending money on that.”
Cindy laughed, “Um, Grandma… Courtney’s family is what you used to call ‘Money-out-their… you-know-what rich’…”
Grandma looked at Courtney with shock. “Oh! A proper heiress? Well, you still have to live to inherit…”
Courtney laughed, “My dad has set me up a nice little trust fund. It’ll be available to me as soon as I get my degree. Until then I only have my allowance of a few thousand dollars a week.”
My grandmother looked me straight in the eye. “MARRY HER!” She urged emphatically.
I laughed, “That’s the plan.”
“Why wait?” My grandma wondered out loud.
“Because he doesn’t want any doubt that he’s just in it for the money… like my mother who just got divorced and turned out penniless,” Courtney explained.
“Oh, well… I suppose that makes sense,” My grandma muttered, accepting it. “My condolences dear.”
Courtney shrugged, “She never really cared about me. All she cared about was the money. So I’m glad she’s gone so my dad can meet someone who actually loves him.”
Chatting returned to safer topics and after dinner, Grandma insisted that my mom and dad take her and Aunt Jane home.
“Don’t worry,” Cindy assured our worrying parents, “I’ll make sure they behave.”
We watched them pull out and down the street.
“Fuck, I thought they’d never leave,” Cindy groaned.
“Poor thing,” Courtney comforted, “Any request for our performance?”
“… um… would… would it be weird if I asked to taste Tom’s… stuff?” Cindy asked. “Like he could fuck your pussy, and I’d taste it when it comes out of you?”
“I’ve got no problems with that,” Courtney rushed, cutting off my objection.
I guess it isn’t illegal for her to do that. I thought.
“Then could he fuck your ass, while I try out my new toy?” Cindy asked.
“I guess that’s fine,” I said.
Cindy squealed and grabbed Courtney’s hand pulling her to her room. I followed, getting hard in spite of the fact that I was going to be performing for my baby sister.
By the time I got to Cindy’s room, Courtney and Cindy were shedding the last bits of their clothing. One glance at the two naked girls finished hardening my erection.
“No fair, get naked!” Cindy laughed, wiggling her tits at me. “No fair you get to see our goods and your clothes are still on.”
I laughed and threw my clothes off.
“Knowing you got that from grandpa… it’s still impressive,” Cindy laughed, “I started watching some porn now that I know I’m safer, so I know how impressive it actually is. You were right about the filter, though, it doesn’t really catch much does it?”
“Nah, Dad has no idea what he’s doing with it. I could probably turn it off and he’d never know,” I offered.
“Would you!? I’m always nervous looking stuff up,” Cindy begged.
“Let’s start, the big girl wants a show,” Courtney laughed, falling to her knees, taking my cock in her mouth.
I reached down and started playing with Courtney’s tits as her tongue danced up and down my length. Cindy groaned and started chewing lightly on her lower lip and laid back on her bed. She started rubbing her clit, looking me in the eye as her other hand played with the vibrating plug in her ass.
Courtney pulled me to the bed and laid back next to my sister spreading her legs and pulling me toward her waiting snatch. Cindy leaned forward and watched as I lined my cock up with Courtney’s waiting cunt and slowly drove in, balls deep.
“Fuck!” The girls breathed in unison.
I slowly drew out then thrust in deep. I could tell from Cindy’s reaction she was trying to imagine what having six inches of a man plunge into her tight hole felt like. And I have to admit, even though I knew it was wrong, I was imagining what it would feel like to plunge all six inches of my cock into her womanhood.
I fucked Courtney slowly and with purpose. While Courtney enjoyed the slow, deep, and hard plunges, it drove Cindy wild. Cindy was rubbing her pussy like her life depended on it. When Cindy came, she just kept rubbing. It was incredibly hot.
I knew I was going to cum like a firehose in Courtney, and I was kinda excited for that. I wondered what Cindy would think of my spunk, and that thought pushed me over the edge. I pressed as deep into Courtney’s tunnel as I could, looked into Courtney’s eyes, and unleashed a torrent of sperm into my girlfriend.
Courtney and Cindy came together, moaning and gasping. They shared a happy look, and I swear it made me shoot one more spurt of sperm into Courtney.