I knew things had changed drastically. But in my mind, things were still reversible. There had been a lot of teasing, but be hadn't crossed any boundaries. Sure, I had seen things a brother shouldn't have, I had heard her masturbate many times, but we hadn't done anything physical. I could still 'fix' this. The problem was, did I really want to? And as time passed by, I was getting more and more reluctant, telling myself this wasn't caused by me, or my mixture. There were no ingredients in it that could cause this behavior, and I was sure that out of all the chemists in the world, I hadn't been the only one using these ingredients in such mixtures. And if I was still doubting about finding a fix, my sister's thrilling seductions busted that bubble every time. And you know what? I didn't mind it as much anymore as I used to do. She was doing everything she could to get me hard, and that was just our life right now. And maybe that wasn't even what had shocked me the most. Mom and dad both got their eyeful of my sister's slutty outfits as well, and they never even argued against her -- not once. In fact, they had been closer than I had seen them in a long time as well.
So, one day -- we were watching TV again -- and she's wearing another short skirt. Not as short as some of the other ones I know she wears, but pretty damn short. Of course, my eyes drift away from the TV a lot, ready to watch her tease me again. I wonder what panties she's wearing this time. Surprisingly enough, she doesn't flash me her panties. In fact, she tries her hardest NOT to flash me her panties. What has changed? Then it dawns on me -- maybe she's not wearing any! Either that, or that's what she wants me to think.
Despite my best efforts, I don't get any hint from her. Not a single glimmer even. Damn, she's good...
A couple of days later -- she does the same -- and again, she manages to perfectly prevent me from seeing what's really going un under that frilly little skirt of her.
It was Monday, and I was home alone, until my sister called me.
"Hey bro, can you run up to my computer and check if the thumb drive is still in my computer?" she asked.
"Sure" I replied, and walked to her room, pushed the door open and walked to her computer. "Yep, still in there."
"Shit! Ehm...could you maybe send me the files which are on there? You'll need to use WeTransfer... It's a protected drive, so you'll need to use my computer. It's still on standby, so just move the mouse."
I did as she asked, and her computer sprang to life. I opened her browser, and a shopping page with bikini's popped open. "Buying a new bikini?" I asked.
"Oh shit, was that still open? Just...ignore it. Please... Just send me the files..."
I opened WeTransfer, uploaded the files, then sent her the link.
"Thanks bro, I owe you one."
"Now, let's check out those bikinis you were looking at..." I smirked through the phone.
"No, please no, they are...skimpy."
"Even better" I laughed.
"Ok, you know what? Look at them. I don't mind. I'm not buying them anyway. Way too expensive for such a little piece of fabric. Now, I gotta go. Thanks for the files."
Of course I looked through the website, and spotted some really sexy bikinis. I looked at the prices, and they were indeed expensive -- 70 bucks for a bikini bottom was ridiculous. But...it got me thinking. These things must be found cheaper as well, right? So, I Googled, and found plenty of websites with the most daring bikinis -- sheer when wet, sheer when dry, crotchless... I imagined my sister in all of them, and I was rock-hard just thinking about it. Then I thought...what if...? I could buy one for her. Would she have the courage, audacity for it then? It didn't take long for me to decide...
So, I started browsing the web more focused. The sheer or crotchless bikini bottoms were perhaps pushing things a bit too much, but there were plenty of other options out there. I ordered the skimpiest bikini bottom I thought she'd dare to wear around the house, around her family, only barely covering her. I even checked her cabinet to make sure I got the size right. Two days later, I received a thick, brown unmarked envelop.
I had taken it out of the envelop, wrapped it in wrapping paper and left it in her room with a little note: Early Christmas present.
She came home later that afternoon and found my present in her room. She hadn't looked for me, just unwrapped it. I was thrilled to see she had put it on and walked out on the deck. "You sly little devil" she winked. "But thank you, I love it"
I loved it too on her. God, it was so small. It barely covered her crotch; if she wasn't shaven bald, a good part of her pubic area would certainly be visible.
She laid down on the sunbed, on her back. She started with oiling her front. I loved watching her hands slide over her body, her tits, her always hard nipples. She always made a little show out of it. Then she oiled her belly, her legs, only to end with applying sunscreen around her crotch. Her hands moved so slowly, in slow-motion almost, or at least in my head. Her hands sliding around the edges of her new bikini bottom. Her folds seemed to press firmly against the fabric, almost bursting out from the sides. She shifted a few times, and the little bit of fabric wedged itself a little firmer against her folds. She leaned to the side, put the sunscreen down on the table, and rolled back, causing the fabric to shift a little bit more, pulling at askew just a fraction. But that fraction was enough to let the side of the bikini fabric to nudge itself in a little deeper, and her fold to slightly wrap around it.
She shifted another bit, this time to dry her hands on the towel, and the piece of fabric pushed in a tiny bit more. I was glad I was wearing sunglasses, because my eyes were glued to the brazen display before me. She laid down without adjusting her bikini bottom. Jesus Christ, this was so hot.
After staring at her crotch for 10 minutes straight, I started to think of ways to push her even further. I needed her to shift again...
"Hey, grabbing a drink, can I get you something too?"
"Ice water would be great..." she smiled.
I rushed in, got us our drinks, and rushed back out. Good, she hasn't changed a thing! I sat her glass down just next to the bottle of sunscreen, then moved back to my chair.
