The son's heart races as his mother's soft hand wraps around his throbbing cock, her gentle strokes sending waves of pleasure through him. 'You're so big, sweetheart,' she murmurs, her eyes wide with surprise and lust. He groans, his hips bucking slightly. 'And you're so fucking beautiful, Mom,' he pants, his hands reaching for her breasts, cupping them through her robe. She gasps, her nipples hardening at his touch. 'We shouldn't, sweetheart,' she whispers, her voice barely audible. But her hand continues to stroke him, her pace quickening, her grip tightening. He can see the desire in her eyes, the need that mirrors his own.