Disclaimer: This story and all characters are fiction. All characters are over 18.
When Cathy came to stay with her grandparents for a few days, Pete, her grandfather, thought she would likely be bored. There's not much to do in this little town for a teenaged girl. But she seemed content to hang around the house the first day, watching TV and talking to her grandparents. Tomorrow, Pete's wife would be at work, and the retired Pete would have to entertain Cathy all day alone.
Cathy seemed like a good girl, polite and obedient, but she acted a little too "grown up." She wore too much eye makeup, and the blonde highlights in her hair looked a little "cheap". Pete supposed that all old men thought that about teenagers. But it was Cathy's tight clothes and new flirtatious demeanor that concerned Pete.
Pete couldn't help but look at her. He had never had a sexual thought about Cathy until today. But she had developed a firm, petite figure. She was only about 5'3" tall, with smaller breasts, near-perfect butt, smooth legs with firm thighs, and a pretty pug-nosed face. Her shorts were thin and tight and cut too high. As she sat across from Pete in the living room on that first day, with one knee slung over the chair arm, Pete couldn't help but see her flowery panty crotch up her shorts. And when she came over and sat by Pete on the couch, he could easily see down her low-cut cotton shirt to her little white bra.
Pete was trying not to stare, but somewhere during that first day, Cathy appeared to catch on that Grandpa was watching her, and really started to flaunt her body. All day and all night, when Grandma wasn't looking, she paraded around in front of Pete, smiling, leaning over, and walking by like a cheap hooker with her hips thrown out. Then she would sit next to him, press her bare thighs against his, press her little breasts into his shoulder, and give him big hugs. Pete wasn't used to feeling this way about his granddaughter. The grandfather side of him was trying to ignore her, but the horny male side of him kept trying to discreetly look at her and admire her body.
Pete went to bed early that first night, but had trouble falling asleep thinking about Cathy. He knew he would never attempt anything sexual with her. But he couldn't help picturing her naked, and having fantasies involving her.
Pete woke up the next morning just as his wife was leaving for work. When Cathy got up almost two hours later, Pete made her a breakfast. Cathy sat at the kitchen table, wearing a thin, white, sleeveless, low-cut nightgown. No matter how hard he tried, Pete couldn't help trying to look down into her nightgown. Pete grew up in the days when small-town girls rarely put out before marriage, and Pete's wife had been the only woman he had ever seen completely naked. How many years had Pete ached to see a firm young body like Cathy's naked? Forty? Pete looked at the tops of Cathy's little titties as her gown gapped open just slightly, telling himself he only wanted to see them just once. But as he peered in through his bifocals, Cathy glanced up and caught him. Pete saw Cathy looking up at him, smiling, and knew he was busted, and turned away, red-faced.
Pete left Cathy eating breakfast, sat on the couch in the living room, and started watching a game show. The main curtains were open, but the picture window was still covered by sheers, which kept anyone outside from seeing in.
After her breakfast, Cathy entered the room and stood near the windows. The sun shone through her short cotton nightgown, and Pete could clearly see the silhouette of Cathy's tits through her nightgown. They seemed to defy gravity, pointing straight out. Cathy seemed to know that her grandpa was staring at her, and she put her hands on her hips in a posing position with a sexy smirk.
Cathy joined her grandpa on the couch, sitting to his right. He ignored the TV, and watched Cathy's thigh pressing into him. As she hung onto his arm, he turned to her and asked, "Well Cathy, what are you going to do today?"
"I'm going to stay right here with you, Grandpa."
As Cathy squeezed her grandpa, her shoulders were hunched, and her nightgown hung open. Pete couldn't resist looking down into her nightgown again. He saw most of her firm right tit, beyond her tan line, nearly to her nipples. Cathy saw him looking and leaned forward more, and Pete caught just a glimpse of her soft little light-pink nipple.
"Won't you get bored?" He asked.
Cathy climbed on her grandpa's lap, just like she had so many times in the past. She weighed well under a hundred pounds, but Pete still grunted as she plopped her little butt on him. "Ooof, you're a lot bigger than the last time you sat on me!"
Cathy put her arms around Pete, and he instinctively put his arms around her. Cathy's short nightie had bunched up, and her white flowery cotton panties were visible, pulled tight over her crotch. Pete's right hand was on the outside of her bare left thigh, and his left hand was around her waist. When Pete's eyes left his granddaughter's panties, he saw that her nightgown had fallen off of her left shoulder, and her left tit was fully exposed. Pete stared wide-eyed and slacked-jawed at the perfect cone-shaped little tit, less than a foot from his face.
