Sally's little hands tremble as she unzips her brother's pants, revealing his throbbing, ready cock. He's her first, and she's eager to please him. She climbs onto him, straddling his hips, her morena skin glistening with sweat. She rides him slowly, their bodies moving in sync, their moans echoing in the room. It's a dance of taboo, a secret they share, a sin they both enjoy.