Luke stands behind his grandmother as she lies on her stomach on the side of the bed. She has her bottom cheeks spread wide for him with her dark hole agape. He takes a deep breath and grabs hold of his fat, average sized penis. His tip pushes up against her sphincter as Kathy gasps out loud. He looks down at his shaft splitting his grandmother's virgin asshole wide open. He eyes her tight hole getting wider with every inch of his meat going deep into her ass.
Kathy lies in shock, grabbing onto the bedsheets for dear life. Luke stands in a dominant position behind her with his cock deep inside her rectum. She cannot believe it. Her grandson's cock is inside her ass, slowly thrusting back and forth, penetrating her sensitive passage. Even after the craziness of last night in the motel and both detours on the road earlier, Kathy finds herself in denial, questioning if this is her reality or some kind of wet dream she'll wake up in bed to. Her own flesh and blood fucks her deep and raw in the ass. The pain quickly turns into pleasure. With each of Luke's deep and slow thrusts into her, she feels a bizarre sensation with the need to empty her bowels. Of course, having already done so and prepping herself, she knows she doesn't have to use the bathroom. A wave of pleasure floods over her body as she adjusts to the ultra sensitive sensation of her rectum getting stretched by her grandson's thick penis. She can't help but let out deep grunts each time he slides himself into her. Kathy can feel an orgasm building inside her womb each time his balls slap her rear. She knows he's fucking her with long, deep strokes like she requested him to do.
Luke's mind begins to wonder off. He tries to think about anything else besides what he's doing. Though he's taking it slow, he's deep inside his grandmother's asshole. It's so warm and sensitive with her tight ring wrapped around his shaft. He knows he can erupt, spilling his seed deep into her bowels at any moment but he wants to last as long as possible. He wants to remember this road trip. This day. This night. This moment. The moment where he fucked his grandmother in the ass in some hotel in Wyoming. He stays quiet as Kathy grunts, gritting her teeth from the sheer intensity of his deep penetration. Feeling an orgasm approaching without his control, Luke stops his thrusts. He pulls his cock out of Kathy's ass and stares at her stretched dark hole. He needed a rest break to last longer. Quick to action, Luke bends down and dives his face into her rear. With his hands, he parts her cheeks and slides his tongue up her ass.
Kathy moans, not expecting the sudden oral stimulation from Luke to occur. She lies with her face buried into the bedsheets, feeling his salivating tongue explore her anus. She feels his tongue rimming all around the edges before he pushes it in and out of her bum. Luke slides his way down to her vaginal lips getting a taste of her freshly shaved area.
Luke splits his grandmother's ass wide open and eats her out from behind. He tastes the lube jelly around her anus and her vaginal juices lower near her pussy. Whether Kathy realized it or not, she had an orgasm and her pussy was trembling from when he first stuck his rod up her ass. It's only after the feeling of his approaching orgasm begins to subside that he gets up and decides to switch to a new position.
"Get on top of me grandma," Luke instructs Kathy.
"Yes darling!"
Luke climbs into bed and adjusts the pillows for him to lie back and sit upright. Kathy follows and gets onto the bed making her way on top of him. With a smile on her face, she reaches behind to find his erect cock. She adjusts her lower body position to align her asshole with. Once the tip of his cock slips into her rear, Kathy sits down slowly, taking in every inch of his meat. Her eyes widen and her jaw drops. She grits her teeth and looks up to the ceiling.
"Your cock is even deeper inside of me than before!"
Luke smiles ear to ear at her. He adjusts his legs higher so her bottom cheeks rest comfortably on his upper thighs. Kathy gives him the go ahead to begin as she leans forward into his face to kiss him deeply. They share a deep, intimate kiss. Luke has his arms wrapped around his grandmother slowly thrusting his hips up and down, penetrating her asshole. Kathy grunts with her lips locked to his, feeling every inch of his meat stretch out her ass repeatedly. Luke caresses her soft skin, enjoying the sensation of her warm breasts smooshed against his chest as he claps her cheeks rocking the entire bed.
Kathy knows she's so close to creaming herself all over Luke's cock. She feels her orgasm building up inside of her vagina as he fucks her ass. All of her friends were right about the increased sensitivity with anal leading to an enhanced orgasm. And now her grandson of all people are going to help her reach orgasmic bliss. She leans herself upright and spreads her booty cheeks wide with her arms, allowing her to feel every inch of her grandson's rod slide in and out of her arse. He grabs her breasts at this time and begins to squeeze them and touch her erect nipples. Trying to stay quiet, she knows it'll be a challenge. Kathy sways her body side to side as Luke thrusts himself in and out of her from beneath. She feels her body dripping in sweat from the intense physical activity.
Kathy lets out a deep snarl when her pussy begins to tremble. She buckles herself and shoves Luke down flat on his back with her arms, taking control. She increases the tempo pushing herself further down into his lap, shoving the entirety of his shaft up her asshole and pulling herself up. She pushes down and then back up repeatedly. Luke uses a free arm of his to slap her ass from behind in her process of doing so. Kathy is unable to stay in control of herself any longer. She feels her pussy clench tight before relaxing, releasing her creamy flow. She moans deeply as her orgasm hits hard. She feels her cum spill out of her vagina with her grandson's cock lodged in her other hole. She leans down into him for another kiss, calming down from her orgasmic high.
Luke knows he's about to hit his peak. Knowing his grandmother just came all over him, he continues to thrust himself up and down. Kathy kisses his neck softly, nibbling his ear in the process. She whispers words of encouragement to him.
"That's right my handsome grandson. Fuck this tight ass of mine. Fuck your grandmother in the ass! It's all yours darling! Cum inside my ass! You know you want to. That's right! Just like that! You know you want this. You know you want me more than Sara!" Kathy says to him.
He listens to his grandmother's dirty talk, telling him what he's discovered in the last couple days. He craves Kathy over his own fiancé. He hits his final orgasm of the night thinking about his grandmother's words.
"FUCK GRANDMA!!! I'm cumming for you!!" Luke growls.
He penetrates her asshole slowly until the sensitivity of the sensation becomes overwhelming for him to continue to thrust into her. His cock pauses, spitting his seed up her tight hole. Kathy moans with him feeling just how much of his milk shoots up into her bowels. Luke has about six or seven powerful eruptions, spitting out semen. He only pulls his penis out of his grandmother's ass when it stops twitching.
Kathy sits upright, grabbing her rear and spreading her cheeks. She pushes out his cum onto his crotch. She gets off his body and allows him to calm down. Luke looks at her with devious smile on his face. He wipes some of their cum off his crotch and licks his fingers, getting a taste of his seed, her vaginal juices, and her asshole. Showing her grandson she can be just as freaky, Kathy leans down to his crotch and licks up the rest of their mess. She leans up to his face and tells him to open his mouth. Kathy spits the rest of their juices into his mouth and proceeds to kiss him lustfully. They make out for a few minutes getting a taste of each other with their tongues battling in their mouths. Kathy lies down next to Luke once they calm down.
"This has been fun darling! I think we're going to have to find some private time for each other when we get back, don't you say?" Kathy asks him.
"I think so too grandma. Never would have thought this road trip would have taken this avenue. But now that we're here, there's no turning back. And I'm more than happy with that!" Luke says.
Luke and Kathy talk for awhile, agreeing to keep their secret down on the low for as long as they can. They don't want the family to be suspicious of anything between he and his grandmother. They have one more quick round of sex before they fall asleep together. They will be on the road to his family home in the morning.