Their eyes meet across the dinner table, the weight of their secret heavy in the air. After their parents retire, they sneak into each other's rooms, their hearts pounding with anticipation. She climbs onto his lap, straddling him, her short skirt hiking up to reveal her damp panties. He grips her ass, pulling her closer, his cock straining against his jeans. They kiss, their tongues dueling, as they begin a slow grind, their bodies moving in perfect sync, chasing the forbidden pleasure they've both been craving.