In the first installment of 'The Cuckold's Manual,' Leon guides the cuckolds through their humiliating journey. Karina, dressed in sexy lingerie, teases her husband, O Corno, with another man's cock. She strokes D's thick, veiny dick, comparing it to her husband's, making him shrink in shame. The room echoes with Karina's moans as she's pounded hard from behind, her husband forced to clean up the mess afterward, learning the art of cuckolding.