Drive home.

You begin the long drive home, with night quickly falling within the first hour of departure. The roads are largely empty and unlit save for the arc of your headlights illuminating the winding highway back to town. You engage in light conversation for the first part of your journey, but that quickly dies down to nothing but the sound of soft music coming through the car speakers. As you reach the halfway point, you notice Gemma unclip her seatbelt and reach her hand over to your lap. You freeze, tapping the brakes out of instinct as her thumb and index finger grab the zipper of your pants and draw it down slowly. You glance frantically in the rearview mirror, only to see that your wife and Gemma's father are sound asleep, their heads nestled against the headrests of their seats.

Gemma's hand reaches in and pulls out your cock, and shamefully you're already semi-hard. She leans over and buries her face in your lap, taking your cock between her lips and sliding it down until it's completely disappeared. You gasp as she uses her throat muscles to milk your cock, which grows harder and harder with every pulse until you've reached full mast. She begins to slide up and down slowly, her tongue gliding along your shaft as you continue to glance into the back seats to make sure your passengers are still asleep. It's impossible to concentrate as her soft, firm flesh massages your shaft, leaving it covered in a blanket of liquid warmth, and you fear that you might lose control of the car and drive off a cliff, killing the four of you.

You hit a particularly poor patch of the road, and each bump causes the tip of your cock to jab into the back of Gemma's throat. She gags with every jolt, and you worry that the sounds that she makes will wake up your wife or her father. It takes only about ten minutes of slow, torturous throating for you to feel your groin seize up, and a surge of steaming hot cum erupting out the head of your cock. You momentarily veer to the wrong side of the road as your body tenses up and quickly swerve back in case another car comes around the corner. As the car rumbles across the rough asphalt and jerks from side to side as you swerve, Gemma struggles to contain the flood in her mouth and begins to ****, coughing and snorting cum out of her nostrils as you finish unloading yourself inside of her.