Judy giggled. "Especially tonight. Golly, Jimmy, do you think we'll really get to see them do it?"
"If they leave the lights on," said Jimmy. "Let's keep our fingers crossed."
All day the twins kept exchanging secret glances whenever their new parents weren't looking. In spite of their impatience to be back at the spy hole, Jimmy and Judy spent a very pleasant day. Obviously, Grant and Kay were determined to show them a good time. Grant took the day off from his law practice, and Kay served a lunch especially designed to appeal to teenagers – hamburgers, french fries, and milkshakes. Afterwards they all went swimming in the enormous pool. The sight of Kay in a bikini was almost too much for Jimmy. She seemed to be all curves and tits. To his annoyance, he got an erection that wouldn't quit, and he was forced to remain in the pool till he was almost waterlogged.
"You certainly enjoy swimming, don't you, Jimmy?" Kay said innocently.
"Oh, yeah, I sure do," Jimmy said absently. He wished he, could stop staring at her breasts. Crammed into the tiny bikini top, they seemed about to pop out at any second, two huge fleshy globes fighting their confinement. He remembered how they had looked naked, quivering and wobbling under Grant's eager touch. With all his heart Jimmy wished he could touch her like that. It was an impossible dream, of course. Kay must think of him as just a little kid. Clearly she didn't dream that he was staying in the pool so long just to hide a hard-on.
After dinner Kay offered to take the twins to a movie. The offer was clearly made with reluctance, and the twins saw her glance wistfully at her husband. Fortunately, everyone's desires coincided. Jimmy and Judy were just as eager to be at the spy hole as Grant and Kay were to be alone together.
"Thanks very much, Aunt Kay," said Judy, "But we'd better skip it. We're awfully tired after our trip, aren't we, Jimmy?" When her brother did not respond immediately, she kicked him under the table.
"Oh, yeah," said Jimmy, "we're really bushed. We probably oughta go to bed early."
Grant and Kay looked very pleased.
After saying goodnight, the twins rushed to their bedroom. "I guess we'd better get into our pajamas," said Judy, "just in case they come to check on us."
Just as they finished putting on their nightclothes, there was a knock at the door.
Kay leaned inside and smiled at them. They looked so cute, she thought, Jimmy in his striped pajamas and Judy in her pink shortie nightgown. "Well," she said, "I see you don't need my help with anything. Goodnight, kids."
"Goodnight, Aunt Kay," they said in chorus.
As soon as she closed the door, the twins rushed to the ventilator, kneeling shoulder to shoulder and peering through into the next room. They were rewarded by the sight of Grant taking off his shoes.
Kay entered the master bedroom. She and Grant looked at each other hungrily for a moment, and then he sprang up and hurried to embrace her.
"I can't figure it out," he said. "I haven't felt so horny in ages. All day I kept wanting to jump on you and ball you right in front of the kids."
Kay giggled. "I bet I know the reason, you old goat. Judy isn't exactly a child any more. I saw the look on your face when she was walking around in that bikini."
Grant laughed, too. "Well, for that matter, Jimmy isn't such a little kid, either. Maybe I'm mistaken, but I thought I saw you looking at his crotch a few times. If I'm an old goat, my dear, you're a dirty old woman."
Kay blushed deeply. "Oh, Grant, how can you say that? Why, he's just a boy. I'm almost old enough to be his grandmother."
"Some grandmother," said Grant, pawing her big bulging breasts through her blouse. "How about a little fuck, Grandy?"
"Grant! Not so loud. They might hear you," Kay said nervously.
"Don't worry, about it," said Grant. "They were exhausted. They're probably sound asleep by now."
In the darkness of their room, Jimmy and Judy stifled their giggles. They watched avidly as their aunt and uncle took off their clothes. For a man of middle age, Grant Thomas was in excellent physical condition. Although inclined to be slender, he was solid muscle, and except for the small area covered by his brief swimming trunks, he was deeply tanned all over. A thick mat of blond hair gleamed on his chest. As he stepped out of his shorts, the twins gawked at his long white dangling penis. To Jimmy and Judy it seemed immense. Judy was particularly impressed, since it was the first time she had seen an adult cock. She knew just the basic facts of sex, enough to realize that when Grant and Kay made love, he would stick that long, thick thing inside her. It looked far too big for that. As Judy imagined taking it inside herself, she shuddered.
"You cold?!" said Jimmy.
"Ssshh!" said Judy.
Nevertheless he put an arm around her shoulders. Judy didn't even feel it. She was totally absorbed in staring at Grant's long flaccid cock and at his seemingly enormous testicles which wobbled loosely between his thighs, gleaming with light blond hairs. He wasn't circumcised, and his swaying prick ended in a pale point of flesh. Judy couldn't decide whether she was attracted or frightened by the sight of mature male genitals. She only knew she couldn't take her eyes off her uncle's crotch.
Meanwhile Jimmy was equally absorbed in watching his Aunt Kay. Her heavy swaying tits looked even bigger than this morning, and he noticed that the light brown nipples were already stiff and pointed. In his innocence he didn't realize that this was due to sexual arousal. As Kay stepped out of her panties, Jimmy's eyes widened at his first sight of female pubic hair. Kay had a fuzzy little patch of golden hair, triangular in shape, which cried to be petted. Again Jimmy felt an agony of envy for his uncle. What more could a guy want than to be able to take that beautiful woman to bed any time he wanted to? Jimmy had no real notion of what you did with a woman once you got her into bed, but he sensed instinctively that it would be great fun. Alas, he was only fourteen. It would probably be years before he had a chance to find out what fucking was like. It seemed more than he could bear, having to wait all that time. Even now he felt his immature cock growing stiff with excitement as he eyed the voluptuous nude body of his lovely aunt.
"Christ, it's about time," said Grant, seizing Kay's hand and leading her toward the king-size bed. "It's all I've thought about all day."
Kay laughed rather wistfully, "I suppose that means you'll cum in about thirty seconds."
Grant flashed her a horny grin. "Oh, no, baby. I intend to give you all you need. You do need it, don't you?"
"Ohhh, God, yes," said Kay. "I suppose it's indecent of me to admit it, but I want you so badly I could scream."
"Not me, sweetheart," said Grant wickedly. "What you want is my cock."
Kay blushed deeply. She obviously wasn't as free in her language as Grant was. Her eagerness equalled his, however. As he let go of her wrist, she fell submissively onto the big bed, spreading her long legs wide for him.
"Hurry," she said.
From their spy hole, the twins gawked at the scarlet gleaming flesh between her legs. Judy had never taken time to explore herself there, and she was just as surprised as Jimmy to see the intricate folds and valleys of a grown woman's vulva. Kay's blonde pubic hair thinned to a delicate fringe between her legs, lightly outlining the glistening deep pink lips of her labia. A small dark valley marked the mouth of her vagina, and from it issued a thin but steady trickle of cream.
Grant eyed this spectacle just as appreciatively as the twins did. While his wife wriggled impatiently on the bed, he stood before her, hands on hips, studying the puffed flesh of her pussy.
"Grant," said Kay urgently, "it isn't Disneyland. It's me, your wife, and I want you."
Grant laughed teasingly. "You're certainly a horny little bitch tonight, my dear. Couldn't you at least say please?"
"Grant, if you don't fuck me this minute, I'll rape you, I swear it. I don't know how I'll manage it, but I will."