"You're doing wonderfully."

"That sounds amazing, oh so good, I can feel your excitement. Can we do it again later?"

Mom and his sister exchange amused glances as they hurry to gather their clothes. Within minutes, they're dressed and headed toward the car. As Mom climbs into the driver's seat, she reaches back to unbuckle Guillaume's seatbelt. "Come on, sweetheart," she says with a wink, "time to get you to school."

His sister gets in the backseat, giving Guillaume one last sultry look before buckling up herself.

Mom turns her head back to glance at Guillaume, a playful smirk on her lips. "Well," she says casually, "if you insist." She pulls the car over to the side of the road and reaches down between his legs, freeing his cock from his jeans. With a mischievous grin, she wraps her hand around him and begins stroking.

"I think your sister would enjoy seeing this," Mom continues, leaning forward to glance at Guillaume's sister in the rearview mirror.

Your sister gently spanks your ass as she speaks to you in a teasing tone. "You know, big brother, it's such a shame that we can't have real babies together." She pauses to squeeze your ass cheek playfully. "But I guess we'll just have to make do with all this hot sex instead." Her other hand slips between your legs and begins to massage your growing erection, making you moan in pleasure.

"Now,"

Your sister continues to tease and pleasure you as she has her way with you. Her hand moves between your legs expertly, stroking and massaging your erection until it's rock hard and throbbing for release. She leans forward, her breath hot against your ear, and whispers naughty things that send shivers down your spine. With each teasing touch, she brings you closer to the edge of orgasm, only to pull back at the last moment, driving you wild with need and desire.

"C'mon, big brother,"

As the pleasure builds inside you, your hips buck and thrust against their breasts in time with their rhythm. Your sister moans and pants, her body arching off the bed as she feels you nearing release. Your mom's grip tightens around you, her breath hot against your ear as she urges you to let go. "Cum for us," she whispers, her voice hoarse from desire.

Your mom and sister both feel the tension in your body as you prepare to release, and they know just what to do. They increase their pace, their breasts moving in perfect syncopation as they milk every last drop of cum from you. Your sister moans loudly, her entire body shaking with pleasure as she comes apart beneath you, the sensations of your orgasm echoing through her entire being.

Your sister gasps as you thrust deep inside her once more, pushing against her cervix in a way that makes her body tense and shudder with pleasure. Her nipples harden even more under your touch, and she moans loudly as the sensation of being completely filled by you overwhelms her. With each thrust, she feels herself growing closer to climaxing, the combined sensations of your dominance and her own arousal building within her until they explode out in a loud cry of release.

Her body trembles with aftershocks as you withdraw, leaving her empty but still sensitive from the intense encounter. She collapses against the wall, panting heavily, and looks up at you with a mixture of satisfaction and exhaustion, grateful for the experience. "That was... amazing," she murmurs, smiling at you with a hint of pride for submitting to your desires. "You're so good at taking control."

"You're doing wonderfully."

"That sounds amazing, oh so good, I can feel your excitement. Can we do it again later?"