A typical day: morning

You wake up to the sunlight streaming into your window. Even though you had graduated high school two weeks ago your body still had you waking up as if you were supposed to get ready for school. You figured it'd take a few more weeks of summer to get used to sleeping in all the time. You stretch and stand rubbing the sleep out of your eyes. As you get out of bed you can feel your morning wood pushing against the fabric of your boxers. Well when you have the bat, you might as well swing.

Heading out of your room you look down the hall at the other bedrooms. The master bedroom is empty from what you can see from where you are. No surprise there your moms both work so they likely are already getting ready to leave. Your older sister's room is also empty, she's likely out for her morning jog. That just leaves your twin sister, Mary, alone in her room.

Walking over to her room you gently push the door open. She's still asleep in bed, her covers pushed nearly off her body. Despite technically being twins you don't look much alike. Your Ma explained it once, that this can happen with IVF babies. While you have dark hair and a natural tan like your Ma your twin is blond and pale as paper. You walk over to her bed and pull the rest of her covers off. Her body is a lot like your Ma's though, she has naturally big boobs and wide flared hips. While not a tall woman she's above average thanks to her long legs.

Feeling the chill without her covers your sister's eyes open slowly, widening slightly at seeing you before she sighs as she wakes.

"Hey bro," she greets as she sits up. "'Sup?"

"I woke up with a raging boner," you tell her, doing everything you can to sound calm and confident. "I need you to get rid of it for me."

"Now? Dude it's first thing in the morning."

"Yes, now," you say. The first few times you started this new house rule you'd like have backed down, but despite the strangeness of it all the plan seems to have worked. You're way more confident now than when you started.

"Ugh, fine," she sighs as she starts to pull off her pajama top. As she goes to pull off her sleep shorts you drop your boxers, freeing your now rock-hard cock.

Before she does anything else you pull her head towards you. "Suck on it first, I like your mouth."

Mary rolls her eyes but does as you tell her, opening her mouth and wrapping her lips around your cock. Slowly she guides her mouth up and down your cock. You leave your hand on her head, not to control the tempo but simply to remind her who is boss. You can hear wet slurping sounds as she works her mouth around your dick ensuring it will be nice and wet for later.

"Mmm," you groan as she speeds up. "That's real nice. You're not as good as Erin at this, but you got both our moms beat."

"Being a better cock sucker than two lesbians isn't all that hard John," she tells you as she pulls back from your cock. She opens her mouth again to go back to your cock but you lightly pull on her long blond hair to stop her.

"Hold up," you tell her. "I don't want to nut just from getting sucked off. Lay back, I want to fuck your pussy now."

Mary nods and goes to lean back, but not before she heads over to the drawer, likely to pull out a condom. After the arrangement was made your moms bought a ton of them and just left them all over the house. You had been using them but now you wanted to try something.

"No condom," you tell her. "We're going to do it raw."

"What? Seriously, John?"

"Yes. I want to see how it feels. Put it away."

"Ugh," Mary groans but obligingly puts the plastic package back on the nightstand and lays back on the bed. She rolls her hands over her body in the universal sign for "come on and get it." You don't need to be told twice. You climb over her, fitting nicely between her legs and find her pussy's entrance with your cock head. It's good that the spit shine she gave it a few minutes ago was still wet because she was not fully there. You rub the head of your cock on the outside of her pussy in order to get her a bit more warmed up, but just that little bit of feeling pushes you to need more. With a deep breath, you push the head into your sister's entrance once again.

As soon as you get in, you thrust in deep. This isn't the first time you've fucked your sister, it might not even be the 20th, but without the condom it feels totally different. You finish thrusting until you bottom out and give it a second, luxurating in the feeling around your cock. You rub your hands over Mary's tits, flicking at the nipples.

"God you feel good," you mutter as you pull back before thrusting back in.

"Uh-huh," Mary groans as she shoots you an indulgent smile. It was the default expression your family seemed to have whenever you fucked them. You can't help but kiss at it, causing your sister to shudder, either from her brother kissing her on the mouth or from your cockhead hitting the back of her pussy.

"So, sis do you-Ah fuck-like my cock?" You ask as you start to speed up. You can feel your finish coming soon. Morning wood never lasts long.

"What? Um...no? Maybe?" Mary's face screws up a bit as she feels your thrusts get harder. "I mean you're pretty big-oof-but like you're my brother. It's weird to even think about."

"Cool," you sigh as you kiss her neck, breathing in her smell. "I mean I like your pussy. It's g-g-good, better without the condom. I'll need to tr-try everyone else like this to be sure whose is the best."

"Whatever floats your boat, bro," she gives you another smile as you start to really speed up. Your climax is a runaway train at this point. "So since you don't got a condom on when you cum," before she can even finish that thought you thrust as deep as you can and blast a thick load into her womb. Even as you cum you grind your hips against her's, determined to get as deep as you can inside. "Ah-seriously John? Inside me?"

"Yeah," you groan half to yourself half to her. "That fucking rocked."

"Why not literally anywhere else but inside me?"

"Because I wanted to," you tell her as you pull your soft cock out and roll over. "And if I want it you have to do it.

"Yeah but..."

"Nuh uh, that's the rule, as long as I'm confident about it, you have to do what I want. I can't think of anything more confident than cumming inside without even asking."

Mary sighed but agreed to your point. She started to slide to the edge of the bed, likely to get up, but you grabbed her arm.

"Hold up Mary, my cock is covered in cum and your pussy juices."

"So?"

"Clean it off. With your mouth."

Mary sent you a look but rolled her neck and slid down your body and wrapped her soft lips around your cock again. You folded your arms behind your head as you let her do her work. You closed your eyes and almost fell back to sleep when a small knock came from the door frame.

"Well, good morning," a familiar voice said from the opening. "Good to see that you're both up early."