Sam sat impatiently, waiting for his twin to come downstairs. She was taking her own sweet time getting dressed. He glanced at the clock, it was almost six.
Upstairs in her room, Samantha gazed at herself in the mirror and shivered. She'd taken a long, hot shower and then debated what to wear. This night had to be extra special.
She'd settled on a light summery dress, pure white, that accented her creamy, golden tan. It was silk and she noticed her nipples were obvious beneath and pursed her lips, wondering if she should wear a bra. She decided not to wear any underwear and giggled. She felt very slutty.
The dress was rather short, accenting her long, shapely legs and a rather generous expanse of firm thighs. Hopefully there wouldn't be too much of a breeze. She shivered, she wasn't much of an exhibitionist but she wanted to look extra special for her twin tonight.
Exhibitionist, she giggled at the thought. She'd spent the past day naked in their back yard with Sam, swimming and sunning. If that wasn't being an exhibitionist, what was?
She gave her short hair a final brush and nodded to herself in the mirror. Slipping on a pair of sandals she headed downstairs.
Sam's eyes widened as she came down and gave an appreciative wolf-whistle. Samantha giggled and pirouetted for him. He caught his breath as the hem of the dress flared out and he caught the flash of bare buttocks.
"Careful there." He chuckled. "Do that in public and you'll get talked about."
She grinned. "Might be fun to give some guy a thrill."
Sam pursed his lips. "Let's keep the nudity at home, Sammy."
She pouted. "You want me to put on some panties?"
He grinned. "I didn't say that. Just don't go flashing that pretty ass around at every guy that walks by, OK."
Samantha laughed and hugged him. Sam couldn't resist lifting the dress up in back and grabbing a double handful of warm butt. She cooed in his ear.
"See. That's why I didn't wear any." Then she gasped softly as a finger stroked her rosebud.
"Hey." She shoved her twin away with a quick laugh. "Not now. I'm hungry."
They had decided to dress up and Sam had put on slacks and a sport shirt. As she stepped back from him Samantha's eyes saw the bulge beneath his slacks and grinned. Her efforts to look especially sexy had apparently worked.
"Let's go." She took his hand and they headed for the car.
It was a ten minute drive into the city from their home and Samantha decided on an appetizer. As Sam drove she leaned down and rested her head on his thigh. Her hand stroked the warm, swollen flesh beneath his slacks. She deftly unzipped him and quickly drew out the rapidly hardening manhood.
"I'm trying to drive here." Sam moaned but didn't stop her.
It didn't take her long to make him cum and she savored her before-dinner treat. She squeezed her lips tight around him as he pulsed out his lust, swallowing quickly so as not to make a mess of his slacks. He soon softened and she tucked him back into his pants and sat up with a sigh of contentment.
Sam reached between his twin's thighs and she eagerly pulled her dress up, spreading her thighs to encourage him. His fingers found her already wet and Samantha's head lolled back against the head-rest as pleasure tingled through her at his touch.
Like her twin she came quickly and Sam grinned.
"Grab the Kleenex, Sis." He suggested. "You don't want to ruin that pretty dress." Then added. "Or the upholstery.
Samantha giggled and did, carefully drying herself as best she could.
"I wish this car had an auto-pilot." She chuckled. "I'd make you clean me up with your tongue."
Sam laughed. "You want to drive the rest of the way?"
She shook her head and giggled again.
"I'd wreck us. I can't see anything when I cum. My eyes automatically shut."
They arrived at the restaurant and enjoyed a delicious meal. Sam noticed the special attention their waiter gave his twin and felt a little flash of jealousy.
"You should have worn a bra." he said quietly when the waiter had left. "That guy's been ogling your tits ever since we sat down."
"I know." She giggled softly. "Its exciting."
"Well, don't get any more excited or your nipples are gonna pop right out of the dress." He chuckled, eyeing the twin bumps that stood out beneath the thin silk. He imagined he could see the dark aureolas through the fabric.
They finished their dinner and Sam drove them down to the ocean. They doffed their shoes and walked out on the beach, hand in hand, stopping when the cold, saltwater surf washed over their feet. It was still hot out but the sun was just kissing the horizon and a cool breeze was blowing inland, bringing the pleasant smell of the ocean with it. Sam's arm went around his twin's waist and a helpful hand on her firm butt kept her dress from lifting with the occasional gusts. There were a couple dozen other strollers, mostly couples like themselves. Sam chuckled as his hand sneaked under the hem of her short dress and squeezed a firm cheek, making Samantha gasp.
He grinned when Samantha gave him a sidelong look.
"Sammy! What if someone saw you doing that."
"Sam!"
A shout came from behind them and both twins looked around. It was common for them both to react to that name.
Sam's eyes widened and he quickly removed his hand and arm from his twin. Lisa was walking toward them!
"Hi, you guys." She smiled as she came close.
Sam thought he saw something in the sexy redhead's eyes that gave him a chill.
"Hi, Lisa. What's up?" He said, feeling a bit nervous.
"I just came down to see the sunset and saw you guys." She said with a grin. Her eyes studied Samantha closely.
"Nice to see you." Sam lied.
"You haven't called since the dance, Sammy." Her lips formed a luscious pout.
"Sorry. I've been busy with my summer job." Sam said. "Are you ready for college this fall? You're going to the campus here, aren't you?"
"Yup." She said, smiling. She looked at Samantha. "You're going too aren't you, Samantha?"
Samantha nodded. "Yeah." She was feeling a bit nervous, like her twin. Had Lisa noticed anything?
"Its a bummer having to live in a dorm for the first year but I'll still be able to run home to see the folks regular." She said and gave Samantha another look. "It would be nice if we got to room together. I've always wanted to get to know you better, Sam."
Most of Samantha's girlfriends called her Sam. She didn't mind though when the twins were together it made for a bit of confusion.
Samantha nodded. "Sam said you two had a nice time at the dance."
Lisa gave Sam a coy look.
"We had fun. Sam's a real gentleman compared to most of the guys I've dated."
Sam knew she was referring to his balk at fucking her when she'd obviously wanted him to.
"So. You two on a date or something?"
The twins stiffened, faces blank for a long heartbeat before Sam managed to respond.
"We just decided to eat out tonight. Mom and dad are gone for the weekend and my other half isn't the best of cooks."
Samantha gave a little gasp and slugged him in the arm. "Gee, thanks Bro."
He laughed and Lisa grinned.
"I just thought, since he had his hand on your butt it was a date." She watched the quick, surreptitious looks the twins shared for an instant, then giggled.
"Relax, you two. I've suspected it all year. You guys are doing the incest thing, huh."
Samantha was speechless. Sam looked hard at the pixy face grinning at them.
"What are you talking about, Lisa. Don't go spreading rumors like that, OK. That's not funny." Sam protested, eyeing the sexy redhead with an anxious expression.
Lisa giggled. "Hey. Don't look so scared. I wouldn't tell anyone. I think its kind of exciting."
The twins were tense. This was one of the things that had always scared them, having someone know about their relationship.
Samantha finally managed to find her voice.
"We just got tired of laying around the pool and decided to go out for dinner." She said somewhat lamely. "That's all."
"You guys have a pool?" Lisa's eyes lit up.
Sam nodded. "In the back yard. Its been so hot we've been spending a lot of time just swimming and relaxing in the shade this summer."
"Must be nice." Lisa sighed wistfully, then. "Hey! How about inviting me over tomorrow? I hate swimming in saltwater and getting ogled on the beach when I'm working on my tan."
"I don't know, Lisa ..." Sam hesitated but his twin suddenly spoke.
"Sure. Why not." She smiled. "We can lay in the sun together and gossip about what we plan to do at college." She looked at her twin.
Sam nodded, somewhat reluctantly.
"Sure. Why not." He said with a half-hearted shrug.
Great!" Lisa enthused. "See you tomorrow."
As Lisa walked back up the beach Samantha's eyes took in the girl's voluptuous shape. She was wearing very short cut-off jeans that showed a lot of cheek and a tank-top that left her midriff bare from just below her breasts. She was a bit on the plump side but in all the right places. No wonder Sam had chose her for his graduation date. She almost dripped sex appeal. With long dark hair and sultry, dark-brown eyes she almost screamed sex appeal.
The twins looked at each other.
"I don't think she'll say anything to anyone else, Sammy." he ventured. "We should talk to her about it tomorrow, though, and make sure she understands."
"I want to go home, Sam." Samantha suddenly said.
They headed for the car and the drive home was quiet. Their "date" had been eventful, more so than either liked. Both had always been circumspect about their feelings for each other in public. Today had been enjoyable and both had relaxed enough to hold hands ... till Lisa had appeared to dampen their enjoyment.
Arriving home Samantha hugged her twin tightly as soon as the door was closed.
"Let's not let the night be spoiled." She said.
"Actually, I'm not to worried, Sammy. I really don't think Lisa will say anything."
