Susan and I told our parents of our plans to get married. Needless to say they didn't quite like the idea and things didn't go well between us and our parents after that. So we got married, packed up our things and moved away. We had a cousin, Mandy, that lived in Colorado and she let us move in until we could find a place of our own. We decided to keep the fact that we are married from Mandy, at least until we found a place of our own.
Mandy didn't really question us about sharing her spare bedroom together. I guess it was because of the fact we are brother and sister. It worked out good because it makes it easier for Susan and me to have sex with each other. I didn't think things would turn out the way they did though.
Since it is Susan's day off, we decide to have a little fun around the house. So we wait until we hear the door close for Mandy to head to work and we rush out into the living room. Susan is eager to get into my pants and she pushes me onto the sofa as we enter. My cock is already hard and waiting, but I don't have to wait long.
She is on her knees, grasping my cock with her tongue circling my cockhead, before sliding her lips gently over it. She sucks softly on me as she slowly lowers her mouth down my shaft. I let out a soft moan as she takes my cock in her mouth. She slides her lips back up and then licks my cockhead again. Then she starts sucking my cock in earnest.
Susan slides her lips along my shaft, sucking firmly. She takes her time and I know she is enjoying the sounds of pleasure that I'm making. After a short while she begins to move slower, sucking harder on me as she does. Then she takes as much as she can in her mouth, before moving back to sucking firmly on me.
As she sucks on me, she begins to rub at herself. Her fingers seemingly move on their own. I can tell her fingers begin to increase her pleasure and in doing so it increases mine. There is nothing hotter than watching my sister finger fuck herself. She moves faster on my cock, using her tongue to lick along my shaft and then around my cockhead, before once again, pushing to take as much of me in her mouth as she can.
She slides her mouth up and down to hit the back of her throat and gag. She moves harder and faster, bringing me closer and closer to an orgasm. Her fingers continue rubbing hard at her pussy, building her own pleasure at the same time.
"I'm cumming!" I yell as I throw my head back.
Then I feel my cock throb and a second later, explode in her mouth. She gasps and swallows hard, taking my cum down her throat. I grunt softly, grabbing her head and holding it there until I am finished. We hear a sharp gasp from the living room entrance and as I look I am surprised to see Mandy standing there. "Uh," is the only thing I can find to say.
"Mandy, why don't you join us," Susan offers.
I look down to Susan, even more stunned than before. "What?"
My sister looks at me and says with a wave of her hand, "Mandy and I have been having sex since we were kids, every time we came to visit."
I look to Mandy for confirmation and she nods. "I just had no idea you were doing your brother," she says.
Susan smiles, "That only started recently, there's more."
"I can't imagine," Mandy says.
Susan laughs as I just remain shocked by the events unfolding in front of me. "We're married."
Mandy brings a hand to her mouth. "Oh my," she breathes. "Now that is just hot."
"I know," Susan agrees. "Want to join in?"
"Hell yeah," Mandy says stripping off her clothes.
I can't believe what I am hearing and my cock instantly goes from flaccid to being hard as a rock. Susan slowly begins rubbing my inner thigh toward my crotch. "Hmm, someone seems excited by the idea."
Mandy smiles as she slowly moves down to her knees next to Susan. Mandy reaches out, taking my cock in her hand. It throbs against her touch as I lightly groan at the touch of her cold hand. She leans in closer to me and says, "My god, it's fucking big."
Susan laughs and says, "Tell me about it. I've watched him masturbate with it since he was a kid. I always dreamed of having it in me one day."
Mandy slowly starts to stroke my cock up and down in her hand. I look down at her and she opens her mouth and takes my cockhead into her mouth. I groan loudly as her warm mouth wraps around my cock. Susan moves over the side of Mandy on her knees to get a firsthand view of Mandy working on my cock. Mandy slowly starts to move her head down my shaft.
"Okay, my turn," Susan says as she looks on at out cousin. Mandy slowly lifts her mouth off of my cock and Susan slowly takes my cockhead into her mouth and moves down the shaft taking it down her throat. Mandy watches in amazement as she slowly fondles my balls in her hand. I am in complete heaven, groaning loudly as I lay a hand on the back of Susan's head urging her to go further down.
Mandy slowly leans down and starts licking my balls as Susan moves up and down on my shaft, gagging each time she tries to go down further on my cock. Her saliva is running down my shaft and onto my balls as Mandy takes turns on my balls, sucking one into her mouth, then moving to the other one.
I didn't think I was going to be able to hold my cum for long with the attention I am getting from my sister and our cousin. I think Susan knows the same thing, because she quickly stops and pulls her mouth off my cock, but still stroking it with her hand. Mandy is still sucking on my balls as Susan says, "Okay Mandy, are you ready for the next part?"
Mandy pulls away from my balls and quickly nods. Susan stands up and grabs my hand, helping me up. She leads me back to our bedroom, my cock brushing against her firm ass as Mandy follows us.
Susan leads me to the bed and has me lay down on my back. I look to Mandy's nicely shaved pussy, as my cock points straight up toward my stomach, still dripping with Susan's saliva. I notice her pussy lips are tight together, but with a little glistening coming from them.
Susan stands by the side of the bed as Mandy climbs onto the bed next to me. Mandy moves over the top of my chest and straddles me. She slowly moves up my body until her pussy is just above my face. I slowly stick my tongue out and lift my head up. The tip of my tongue slowly splits Mandy's pussy lips open as I taste her for the first time.