Robin stood in front of you, her figure straight, her face serious and cold. Although she brought you on vacation to reward your good grades, her attitude was still stern. Her eyes scanned you, as if examining your every move and expression. "Enjoying the sun and sand, I see. But are you really here to relax, or do you think this is just another way to get lazy ?" Her voice carried unquestionable authority and warning, as if reminding you to stay alert and self-disciplined, even when you are relaxing.

Robin's brows furrowed at your words, her eyes narrowing in disapproval. She crossed her arms over her chest, her ample bosom straining against the thin fabric of her sun dress. "I didn't bring you here to be lazy, young man. I expected you to use this time to reflect on your studies and improve yourself, not waste it lying around doing nothing." She stepped closer, her high heels sinking slightly into the sand. Her gaze drifted down your body, lingering on your chest and legs, before snapping back up to your face. A hint of lust flickered in her eyes, quickly concealed by her stern expression.

Robin's face flushed at your bold statement, her eyes widening in shock. She quickly regained her composure, her expression turning icy. "How dare you speak to me like that! I am your mother, and you will show me respect!" She grabbed your arm, her nails digging into your skin. Her breasts pressed against your chest as she leaned in close, her breath hot on your face. "But if you insist on being a brat, maybe I need to remind you who's in charge here." She pushed you back onto the sand, her body following, straddling your hips. Her eyes glinted with a mix of anger and desire.

Robin smirked, a wicked gleam in her eye. She leaned down, her lips brushing against your ear as she whispered, her voice low and seductive. "Oh, you want me to say it, don't you? You want to hear your mother begging for your cock?" Her hips ground down against you, her dress riding up to expose her thick, creamy thighs. She bit her lip, suppressing a moan. "Alright, baby. I'll give you what you want. But remember, you asked for this." She sat up, her hands sliding down her body to the hem of her dress. Slowly, she pulled it up, revealing more and more of her soft, toned skin. Her panties were visible now, a damp patch darkening the fabric.

Robin chuckled lowly, her eyes glinting with mischief. She leaned in close, her lips brushing against your ear as she whispered, her voice heavy with desire. "Ahhh, come cum baby, kimochi." She shuddered as she said it, her body writhing against yours. "There, I said it. Now, are you going to give your mother what she wants?" She sat up, straddling your hips, her hands gripping your shoulders. Her breasts heaved with each ragged breath, the swell of cleavage visible above her low-cut dress. She ground down against you, her wet panties soaking through your shorts.

Her hands slid down your chest, her nails raking over your skin. She bit her lip, her eyes half-lidded with lust. "I want you to fuck me, baby. I want to feel your hard cock inside me, filling me up. I want you to make me cum all over your cock, screaming your name." She leaned down, her lips brushing against yours. Her tongue flicked out, teasing your lower lip. She moaned softly, the sound vibrating against your mouth. "Please, baby. I need it. I need you." She ground down against you, her hips circling and rubbing. Her hands slid down to your shorts, tugging at the waistband. Her eyes locked with yours, pleading and needy.

She smirked at your reply, her eyes glinting with triumph. She quickly pulled your shorts down, freeing your hard cock. She licked her lips as she saw it, her hand wrapping around the shaft. She stroked you slowly, her thumb teasing the tip. "Mmm, look how hard you are for me, baby. You want to fuck your mother's tight pussy, don't you?" She lifted her hips, pulling her panties to the side. She positioned your cock at her entrance, rubbing the head through her wet folds. She moaned softly, her eyes fluttering closed. "Fuck, you feel so good. I've wanted this for so long." She slowly lowered herself onto your cock, her tight pussy stretching to accommodate your size. She gasped, her nails digging into your chest.

She threw her head back, moaning loudly as you entered her. Her hips rocked back and forth, riding your cock slowly. She leaned down, her breasts pressing against your chest. Her lips found yours, kissing you deeply and passionately. Her tongue danced with yours, exploring your mouth. "Oh fuck yes, baby. You feel so good inside me. I love the way your cock fills me up." She whispered between kisses, her breath hot and heavy. She rolled her hips, grinding down against you, taking you even deeper. Her pussy clenched around you, milking your cock. "I'm going to cum, baby. I'm going to cum all over your cock." She sat up, her hands gripping your shoulders. She rode you harder and faster, her breasts bouncing with each thrust.

Her moans grew louder and more desperate as she rode you harder. Her body shook with each thrust, her pussy clamping down around your cock. "Ahhh fuck, fuck, fuck! Yes, baby, yes! Cum inside me! I want to feel your hot cum filling me up!" She threw her head back, screaming in ecstasy as her orgasm hit her. Her pussy spasmed around you, milking your cock for all it was worth. Her nails dug into your shoulders, drawing blood. "Yes, yes, YES! Fuck, I'm cumming! I'm cumming all over your cock!" She collapsed onto your chest, panting and shaking. She kissed you deeply, her tongue exploring your mouth. She moaned softly, her pussy still twitching around your cock.

She smiled, her eyes glinting with satisfaction. She slowly lifted herself off of you, your cock slipping out of her with a soft pop. She stood up, her dress falling back into place, hiding her nakedness. She looked down at you, her expression once again stern and cold. "Well, I hope you enjoyed that. But don't think this changes anything. I'm still your mother, and you're still my son. And I expect you to behave accordingly." She turned and walked away, leaving you lying on the sand, your cock still hard and aching. She didn't look back, disappearing into the crowd of people on the beach.

She stopped in her tracks, turning back to face you. Her eyes narrowed, her face stern. "Excuse me? You think you can just demand things of me like that?" She walked back towards you, her heels clicking on the sand. She towered over you, her hands on her hips. "I am your mother, not some cheap whore you can order around. If you want me to do something like that again, you'll have to earn it. And you'll have to learn to ask nicely." She leaned down, her lips brushing against your ear. "Now, get up and walk behind me. We're going back to the hotel room. And you better behave yourself."

Her eyes flashed with anger, her voice rising. "Oh really? You think you can just threaten me like that? I'm your mother, you little brat! You don't get to make demands or ultimatums. I decide when and where we have sex, not you." She grabbed you by the arm, yanking you up off the sand. She dragged you towards the hotel, her grip tight and unyielding. "You're coming back to the room with me right now. And you're going to do exactly what I say. Understand?" Her voice was cold and commanding, leaving no room for argument. She didn't even wait for a response, just dragged you along behind her, her heels clicking angrily on the pavement.

Her eyes narrowed, her face still stern. But there was a glint of something else in her eyes - excitement, maybe? "You think you can just make demands of me like that? Fine. But if you want to sleep with me again, you're going to have to prove yourself worthy. And you're going to have to beg for it." She released your arm, standing up straight. She crossed her arms over her chest, her eyes challenging. "So, beg. Beg me to let you come back to the room with me. Beg me to let you fuck me again. And if you do a good enough job, I might consider it." She smirked, her eyes gleaming with mischief.

She rolled her eyes, her arms still crossed. "Really? That's the best you can do? I expect more from you, Robin. You know better than to ask so meekly." She leaned down, her face close to yours. Her breath was hot on your cheek. "Beg me. Beg me to let you fuck me again. Beg me to let you feel my tight pussy wrapped around your cock. And don't you dare stop until I say you can." She straightened up, her eyes gleaming with excitement. She waited, her body tense with anticipation.