The Geek Twins – 18th Birthday Money

Mum & Dad had always made them study hard but Oliver & Hilary had left school now and they were ready for fun.

Oliver was on his playstation, in his bedroom.
He was having fun, he hadn’t been allowed to play for two months.
It had been exam season.

He and his twin sister, Hilary, had been taking their ‘A’ Levels – the exams English universities use to decide which students they will admit and which they will reject.

The exams were a big deal and the twins’ parents had always made sure the kids treated their school work as their top priority. They themselves were both well educated. Dad was a research chemist and, although Mum had interrupted her career to raise her family, she was a published historian and lectured part time at the local college.

Their house was full of books and the TV was only turned on when there was something wholesome or informative to watch.

The twins had friends, of course, but there was little time for them to get involved in clubs or groups like their classmates.
And there were was certainly no time for dating!

They spent most of their time at home and together, improving their minds, without any unnecessary distractions.

As a result, it was perhaps little surprise that they had sailed through school and were (almost) straight A students.

But now, at last, the pressure was off.
The A Levels had finished at the end of June and the twins had officially left school.
University wouldn’t start until September, so they had the whole summer to relax and enjoy themselves.
And, just to make things even better, they had both celebrated their 18th birthday, just as their exams finished.
They were adults. And their horizons were broader than ever.

For now though, Oliver’s horizons didn’t extend beyond his playstation and the new game he had bought with his birthday money. The game was challenging, but he eventually got the hang of it and was about to level up when he got a text message from his sister.

“Sorry to disturb. Do you want to see what I got with my Bday money?”

“Ok” he replied, pausing his game.

“Come to my room.”

He walked across the landing to Hillary’s room. She was wearing her dressing gown.

“What do you think?” she asked as she opened the gown to reveal a black, one piece swimming costume. “I’m thinking of trying out for the swimming team at uni. Mum would never let me join at school, even though I was the fastest girl in the class.”

“Well, it looks very professional, just like they wear in the Olympics. It must have been expensive.”

“Yes, I chose it specially, it’s a spandex and nylon composite so it minimises drag and let’s me glide through the water. Oh, and it’s tight over my, erm curves to keep everything streamlined, so l don’t waste any energy.”

“I’m sure you’re fast enough without needing a special suit. But, yeah go for it. I know you’ll make the team if you put your mind to it,” encouraging his sister. “Just don’t let mum think you’re slacking on your studies.” he laughed.

“No, of course not.”

Oliver turned to return to his game.

“Hang on, that’s not all of it. I got another costume. Close your eyes for a minute.”

He wasn’t very interested in her swimming or her costumes, to be honest, but the two of them were close and he was happy to give her his support, “Okay, but just for a minute.” he replied.

He heard shuffling and stumbling before being told he could open his eyes once more.

“Wow!” was all he could say.

Hilary’s other costume was an olive green two piece bikini that complimented her red hair and pale skin while showcasing her figure in a way that Oliver had ever seen before.
If her race suit was designed to flatten her curves, her bikini was made to flaunt them.

“I guess you like it then? Hey! My eyes are up here!” She pointed.
“Stop staring at my breasts.”

“Sorry Hils. I can’t help it. They’re beautiful – no you’re beautiful. You’re going to have to get used to boys looking at them, if you dress like that.”

“Really?” she was excited, “Do you think so? Boys have never shown any in my breasts before.”

“Well that’s because they all just think of you as a swot and a bookworm. And you hide yourself away under baggy jumpers and hug your briefcase against your chest.”

“Well I was at school to pass my exams, wasn’t I? Not to attract a boyfriend, whatever the size of my breasts.”

“Oh. But now you’re leaving school. Going to university. Joining the swimming team and planning to wear costumes like that and show everyone that you are more than just a brain! Is that it?

Hilary bit her lower lip, a little embarrassed, “Yeah, that’s the plan. Do you really think I’m beautiful. I mean, I know my breasts are a good size but, well, that’s not everything is it?”

“Your tits look great to me. And that’s what boys call them by the way – unless they’re trainee doctors. If you keep using words like “breasts” then they’ll keep thinking you’re just a bookworm.”

“Ok.” she said thoughtfully, “But could you stop staring at my “tits” for a moment. It’s getting awkward.”

“Oh, er, yes, of course. Why don’t you give me a twirl to show off your new, er, costume.”

She was no fashion model, but she did the best she could. Oliver was impressed. His sister had grown up to be a shapely young lady.
He had already noticed how the bikini top cupped her tits – lifting them and pushing them together to form a captivating cleavage. But now he also noticed her slim waist and flat stomach, giving way to flared hips, supporting the strings of her bikini bottoms.
The bottoms drew his male gaze to her pert round bum, the deep cleft between her cheeks and (although he knew he shouldn’t be looking) her mound and the shallow cleft of her sex.
He didn’t want his sister to know he’d been ogling her, so he made a conscious effort to look her in the eye when she turned to face him again.

“Why don’t you put your hair down?” he suggested. “You don’t have to keep it in a ponytail all the time.”

“Ok,” she released her auburn locks and allowed them to cascade over her shoulders.

“Wow.” He said it again. “I’m sorry. I know we’re twins and we spend so much time together, but I’d just never noticed how pretty you are.”

She hugged him. “Thanks.” She kissed his cheek. “I suppose I was hiding myself away with my baggy jumpers, long skirts and thick stockings. Mum always said good girls kept themselves covered up. And I was a bit self conscious when my bre… , I mean my tits began to grow.
Do you really like me with my hair down?”

She stepped back and posed.
“And you don’t think this suit is too much do you? I’ve never had a bikini before. I feel a bit exposed. It doesn’t show too much does it?”

Oliver told her to look in the mirror and asked what she thought.
She agreed that she liked the way the little costume showed off her charms and she did think she looked pretty.
She was secretly enjoying the way her brother was staring at her and she told him she thought she’d be brave enough to wear her bikini by the pool – she could always change into her race suit if the boys were leering too much.

Oliver was happy to support her decision, but had a word of caution.
“You’re going to look great wearing that around the pool, but are you sure it’s okay for you to swim in?” he asked.

“What do you mean?”

“Well you wouldn’t want there to be a wardrobe malfunction, would you?”

“A wardrobe what?”

He sighed, “You would want to “fall out of it” – expose anything you didn’t want everyone to see.”

Hilary gasped, “Oh no. I wouldn’t want that to happen.
I think it will keep everything covered. We’d better check though.”

She bent over as she were about to dive. “Is that okay?” she asked.

Oliver couldn’t believe this was happening. He had never been with a girl, let alone such a curvy girl, in such a skimpy outfit. And now he was being encouraged to stare at those sexy curves as she tried to push them out of her costume.

But it was happening and it was turning him on. He was only 18 and his blood was rushing to his cock forcing it to swell and grow, pushing hard against his own underwear.

Hilary practiced her diving pose and her costume stretched and rode up her inner thighs, suggesting it might disclose her most intimate place. But it stopped inches short and allowed her to maintain her modesty.
“Yes, your still decent.” he told her with a hint of regret.

“Good let’s try my butterfly.” She cycled her arms in tandem, arching her back and pushing out her tits with every stroke. Oliver was treated to delightful flashes of cleavage as the boobs oscillated in their cups but he didn’t see anything he shouldn’t.

So she moved on to the backstroke, windmilling her arms above her head. Pulling up her chest and shoulders as she stretched back as far as she could to maximize the power of every stroke.
She stretched a little too far.

A hard right nipple escaped it’s olive coloured enclosure and Hilary’s hand shot down to conceal it once more.
“Oooh sorry! she squealed.

Oliver was overcome by the sight of her pink peak breaking out into the open air. He had never seen one on real life before!
“Aaagh! Sorry.” He exclaimed reaching down to his crotch and running to the toilet to release his throbbing cock.
But he too late and his excited cock completed its own release, cumming into his underpants.

————

The twins didn’t discuss the swimsuit incidents again and a week later Oliver was gaming once more. Despite the summer sun, he had chosen to spend his afternoon staring at a screen, in his room playing games with his friends, who were in their own rooms, staring at screens. None of then would have dreamt of meeting up outdoors.

Hilary had been out, though. She had gone into town to go shopping with her pals like teenage girls do.
She shouted, “Hi,” when she got home and asked whether her brother whether he’d like a drink.

He said he would, so she popped into his room with a glass of orange, slipping him a note, as he concentrated on his game, “I’ve spent more birthday money. Come to my room in 15 mins if you want to see xx Hils”, he read.

He has no idea what she had in mind, but he was pretty certain it would be even more fun than gaming with the boys. He made his excuses, “Sorry lads, something’s come up.” And something had – the mere thought of checking out his twin’s latest purchase had given him a raging boner, like some sort of erotic muscle memory.

Once the 15 minutes were up, he tapped on Hilary’s door. “Come in.” shd told him.

She had her back to him. She was facing her full length mirror. Her back was bare apart from the band and straps of a white bra and the small silky triangle of her matching panties, that didn’t quite cover her heart shaped bottom.

“Come and stand behind me.” she instructed.

“Well I don’t think you ought to go swimming in that.” he joked, not knowing what to say.

“No.” she giggled at his joke politely, “I was just thinking that if I did manage to get a boyfriend, at the swimming pool and, you know, get him into my bedroom. Well I’d need to wear something nicer than my regulation school knickers.
Do you think these are okay?”

“Well, you know I’ve never had a girlfriend but if I did, I’d love her to wear something like that, especially if she was as sexy as you.”

“Oh, you say the sweetest things. Do you really mean that?”.

He put his hands around her waist and held her tight.

Hilary was thrilled by the feel of his touch on her bare flesh and even more excited by bulge of his cock pressing into her lower back.

“Oh, you do really mean it. I can tell.” she said.

“I can’t deny it.” He kissed the side of her neck.

“Oooh that’s nice. Where did you learn that?”

“Erm, extensive research on the internet.”

“You mean porn.”

“Well Mum and Dad wouldn’t let us date, so I’ve had to learn some where.”

“I wonder what else you’ve learned.”

“You’ll see.” he promised

His hands felt their way up towards her bra. Her underwear set was even sexier than her bikini.
The fabric was, thinner, lighter, more delicate and the cut was more daring, showing more boob, more cleavage and more bum. But most importantly, the undies conveyed a different message.

If you saw a girl in a bikini, she might just be a random swimmer or a sunbather, but if you were lucky enough to see a girl in her best underwear, it was because she was your lover.
She wanted you to undress her.
She wanted to feel your hands upon her and she wanted to feel your cock inside her.
He wondered whether that was what his sister wanted….

She made no objection as his hands covered the cups of her bra. It was as white as a swan and the silky fabric was as soft as it’s feathers.
They both breathed deeply, staring into the mirror and watching as Hilary had her tits were squeezed and fondled and caressed for the first time.
Oliver slipped an experimental finger beneath the cloth.
Hilary stepped away, “I’ll take it off of you like.”

“No. Could I do that please. It’ll be good practice. I’m told they can tricky.”

“Go on then, let’s see what the internet’s taught you?”

It has taught him well. Despite nervous inexperience Oliver soon had his sister topless for the first time and after admiring her body in the mirror he slid her hands around to her front and claimed his prizes, squeezing her tits greedily.

Hilary felt her pussy flip as she was undressed and possessed for the first time and they were both filled with exquisite anticipation as Oliver’s right hand moved away from her breast, over her navel and towards it’s ultimate destination.
They both knew where it was going but both wanted to savour the moment and the erotic tension of its journey.
His palm came to rest over the silky patch of cloth concealing her mound and his fingers curled between her legs to discover warmth and moisture of her cunt through the sliver of fabric that covered it.
He rubbed and played there for a moment, whilst his left hand continued to explore her tits and his lips delivered soft kisses to her neck and shoulder.

“You can take them off, if you like.” whispered his sister.

“If you like” he thought. Of course he’d like!

He peeled his own tee shirt off first then knelt before her. Taking her panties in both hands he delicately pulled them down, coming face to face with his first pussy.
“They’re sticker than I expected,” he remarked as he peeled the underwear away from his twin’s crotch.

“That’s because I’m so aroused, you naughty boy.” she explained.

“Is that the reason for the scent too.” he asked, eager to learn.

“Yeah. Do you like it.”

“Sexy.” was all he had to say.
He decided to try something from the internet. He stroked both Hilary’s smooth round buttocks with his hands, then pulled her towards him bringing her pussy towards his mouth. He started to lick.

Up and down her slit.
Around the lips – inside and out.
Flicking into her pussy, teasing her, before turning his attention to her clit.
It was fully engorged and ready for him and he wasn’t going to disappoint.
The tip of his tongue was soon spelling out the letters of the alphabet on Hilary’s, oh so sensitive nub.
By the time he had got to ‘R’ Hilary was already moaning and squirming in delight.
Oliver decided to step things up and started to suck.
His sister was taken by surprise. Shocked and overwhelmed by this new sensation.
She came.
Her first orgasm that hadn’t come from her own hand.
She slumped forward onto her brother’s shoulders as she rode her waves of ecstasy.

“Ohmygod Oliver that’s so good. Aaaah. I’ve decided I don’t want to be the only virgin at university. Ooooh. Will you. Aaaah. Will you fuck me first?

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