Rebecca ran down the stairs two at a time and went into the back yard. She stayed there, out of sight behind a blueberry bush, until she heard David and Martha leave the house and drive away in the blond girl's fancy car. She was trembling over what she'd heard through the keyhole. Her mind spun with the infinite world of sex that had just been displayed for her.

"I wonder what it looked like," she breathed to herself. All she'd been able to make out by peeping through the keyhole was blurred shapes moving wildly. Once she'd caught a glimpse of Martha's bare foot kicking high. But it was the sound of their wild lovemaking that had really gotten to her. Rebecca had never imagined that two human beings could create such a symphony of gasps and cries and whimpers! She'd gotten her attitudes about sex from her Aunt Lana and though Lana would never dream of discussing anything so taboo she gave the impression that sex between a man and a woman was calm, premeditated and mechanical.

Rebecca had tried to imagine such a love match before. The woman on her back with her eyes closed. The male resting gently against her body. No words spoken, no moans or cried. In Rebecca's mind the act would take only seconds. Just enough time for the male to implant his semen inside the female's womb. Rebecca had never been quite sure how this was done. Aunt Lana strictly forbade any literature on the subject. But Rebecca had gleaned a few details from friends at school.

She knew that male sperm was stored in those things that dangled below his cock. The girls at school referred to these reservoirs as "balls". So that meant that somehow the man had to insert his penis into the female body.