Cyndi was spending the day out by the pool, stretched out in one of her incredibly tiny bikinis. The thing was so revealing that Cyndi might as well have been nude, though if she was, I might not have been able to control myself! She lay on a towel by the pool lawn with her legs slightly spread and her arms lifted so that her tits stretched nicely through the bikini. I was out on the deck, which overlooked the pool.
Cyndi didn't know I was watching her, but I wasn't exactly hiding.
Cyndi's body was so incredible that I just couldn't keep my eyes off of her and that bikini didn't hurt! The top came low into her cleavage and was very skimpy on the sides, so that the smooth, curved sides of her breasts were plainly visible and quite admirable. The bikini bottoms were tight and french-cut, tucked high up between the cheeks of her ass. Her buttocks were the most gorgeous I had ever seen. Cyndi's ass was nicer than that of any girls I'd ever fucked, even at college.
Megan had a nice ass, to be sure, and it looked incredibly sexy curved around my cock when we fucked doggy style like Rod and Cyndi, but there was something special about my sister's ass, something incredibly enticing. Maybe she just liked to show off, even more than Megan, which was difficult. Megan wasn't quite the exhibitionist Cyndi was, but I'd seen both girls naked more than enough to know that neither one was very shy when it came to their bodies-especially their asses!
One of the things that turned me on most about Cyndi's ass was that I'd never fucked Megan that way. I had been going out with Megan for six months now, and she was just not in to anal sex. I wanted her to try it-the girls I'd fucked like that had all loved it, but Meg kept refusing. Now Cyndi… she was a lot kinkier than that.
Cyndi came in periodically to get a glass of lemonade or something.
Every time she got up, I moved into the living room, where Dad's expensive stereo was playing, and lay down on the couch with a magazine. I didn't want to make it too obvious that I was watching Cyndi. After all, I had some morals to uphold here. When Cyndi got up, I slid into the living room and quickly put The Who on the record player. I reclined on the plush couch and picked up one of Cyndi's Cosmopolitans. I breezed through it until I found a perfume ad with a sexy woman in her underwear. No wonder Cyndi was always so horny!
Cyndi came into the room, smiling and holding a glass of lemonade.
"What's up, brother?" she asked flirtatiously.
"Not much," I smiled back, making sure my gaze didn't linger too long on her body. Now that she was up close, she looked even better. The outline of each nipple was plainly visible through the bikini. "Trying to hide from the summer heat," I added.
"Why would you want to do that?" she asked. "It's gorgeous out there!"
"Uh-huh," I agreed, glancing at her.
"Would you like something to drink, Ian?"
"Hm… what's the sudden burst of charity?"
Cyndi rolled her eyes. "God! I'm just being friendly!"
"All right," I laughed. "I'd love something. How about an iced tea?"
"With lemon?"
"Sure."
Cyndi walked out of the room, and I got a delightful view of her ass as she did. When she came back in, she was smiling again. She set down the tea and sat on the side of the couch, right next to me. So that her gorgeous, smooth midriff was right next to my face. I inhaled her perfume deeply-the perfume she wore always turned me on. I could even smell it over the magazine.
Cyndi stretched a little, rubbing her side. It drove me crazy when she did that. "I'm getting so horny," she giggled, "I can't believe Rod's going to be gone for another three days!"
I chuckled. "You're getting horny, are you? Well Megan won't be here until Tuesday!"
Cyndi pouted. "It's not the same. You're a man. You can satisfy your own desires."
"Oh, right."
Cyndi giggled. "Just teasing," she sighed. "I hope I didn't embarrass you?"
I began to turn red, but only a little. "Nah."
"How's it going between you and Megan?"
"Fit as a fiddle. She's the sexiest girl I know… well, almost."
"Almost?" grinned Cyndi. "Who's sexier?"
"I won't tell," I said.
"Come on," giggled my sister. "Come on, Ian. You can't lie to your blood relatives. I'll tickle you. I know where you're ticklish."
"That's not fair," I said. "I won't tell. Tickle away."
Cyndi leaned over and began to poke at my stomach. I burst into a wave of giggles, then reached out and grabbed for her. I accidentally touched her left tit and felt my cock give a surge. No more of that!
"Be nice," I said as she collapsed, leaning against me heavily and laughing.
"All right," she pouted. "Don't tell me. I won't tell Megan…"
"You bet you won't!"
Cyndi put her arms around my neck and gave me a hug. Then she kissed me, a friendly peck on the lips.
"I'm so glad you're my brother," she sighed. "I really love you."
She giggled a little, then kissed me again. This time, her lips lingered on mine, and I felt them parting a little. Then I felt her tongue dancing against my lip, and she almost frenched me. Almost. She remained sisterly-at least on the outside. I noticed that her nipples were jutting quite erect through the damp swimsuit.
"I'm going crazy," she sighed, as she pulled back. "I get really lonely without Rod to keep me warm at night. I'm glad I have you here to keep me company-want to go dancing tonight?"
"Sure," I said. "I'll get some champagne this afternoon."
"That sounds like so much fun," she sighed. "I love spending time with you, brother!"
"Great, Sis," I said hoarsely. Cyndi got up from the couch.
"But I don't know if I'll be able to control myself if we go out. There are so many cute guys out there. And I'm really getting horny. It must be tough without Megan!"
"Oh, it's real tough," I said. Cyndi giggled and playfully reached for my crotch.
Her palm landed square on my erect cock and she discovered how hard I was. "Why, Ian!" she giggled, without moving her hand. "You really are horny. Tsk, tsk. I should trust my brother."
Cyndi squeezed my cock playfully, and a wave of pleasure ran through my body. I almost got up and pulled her back onto the couch to fuck her right there, but she was my sister! My face turned beet-red and I looked down.
"Oh, I'm sorry," she said, pouting again. Cyndi sat on the side of the couch and put her arms around me. She hugged me again and touched my lips with hers. "I'm just teasing you, Ian. I can be such a bitch sometimes!"
Cyndi slipped off of the couch and swayed toward the door, her ass luscious in those bikini-bottoms. I found myself panting heavily with relief as she left.
I almost pulled off my dong and jerked off right there. But I figured I should save myself for Megan. My girlfriend would be plenty horny when she got here on Tuesday.
When I was sure Cyndi was downstairs again, I moved out to the balcony with an issue of Playboy, rather than her Cosmo. I stretched out on the chaise lounge, watching my sister.
I reclined on the balcony, looking down at Cyndi as she basked in the sun. She usually sunbathed nude, though she always made a show of wearing a swimsuit out to the pool so I could admire her in it. Now, as I watched, Cyndi began to strip.
She sat up slowly, her face calm beneath her sunglasses, and began to untie the front of her bikini top. I watched, licking my lips, as Cyndi unfastened it and pulled the sweaty material away from her breasts. I held my breath, feeling my cock get hard in my tight shorts. Cyndi slipped out of her top and set it on the lawn next to her, then stretched in the sunlight so I could see her firm, coffee-colored tits.
Cyndi had a nice tan-she worked on it enough! Her nipples were still bright pink, especially when they were hard, so they contrasted nicely to her dark skin.