"You're really going to do it?" Christine asked me, incredulously.
I look down at the skimpy bikini laying on the bed and my heart skipped a beat. I looked up at Christine in her sleek one-piece swimsuit. I hadn't been able to talk her into wearing a bikini with me. Fuck, this would have been so much easier if she had! Could I really wear this now? Maybe if I dared her...
"I'll do it," I told her, unable to keep a little giggle out of my voice, "but you have to do something daring too."
"Like what?" She looked down at her maillot. It was only slightly different than the one she wore for swim meets at the university. It showed off her slightly stocky swimmer's body quite well. There didn't seem to be a lot of options for daring though.
"If you won't wear a bikini..." I started. She shook her head. I thought a second and said, "Then when you're tanning your back, you have to roll your suit *all* the way down, so it looks like you're only wearing a bikini bottom."
Christine blushed. But she had really wanted me to wear a bikini for some reason, perhaps to live daringly through me. She knew that daring me to wear one would work. She was always trying to get me to do things she wanted to do but didn't have courage for, until I'd done it. I was more daring, sure, but this... this was bordering on insane for me! I'd never worn one before, but had decided that if I was going to do it, I was going to go all the way. This bikini was special; it had two secrets.
"Put it on, Alexandra" she said. "Let me see if it's a fair trade."
I picked up the bikini bottom and pulled it on up under the towel I was wearing, fresh from the shower. I tossed the towel aside, revealing my average breasts to the hotel room. Embarrassingly, the thought of wearing this bikini seemed to be enough of a turn-on to make my nipples stand at attention. Christine grinned at this, and as I bent over to get the triangle top from the bed, she reached over and flicked my right nipple. A jolt of energy flew through my body and settled down below.
"Hey!" I told her.
She giggled. "Looks like someone's enjoying this," she teased. She then reached out with both hands to try and pinch both my nipples. I backed away, covering my breasts, and stumbled into the bed. Christine got a wicked smile on her face and charged at me, pushing me back onto the bed. She started tickling me and I struggled to get out from under her, giggling uncontrollably. She laughed as I breathlessly said, "Christine! Stop!" I grabbed her hands to stop her ticking fingers. In return, she grabbed my wrists, pushed them to the bed, and put her knees on my arms. I couldn't move, or protect my breast from my best friend's onslaught as she sat atop my stomach. "No!" I protested, still giggling from the tickling.
Christine used her now free hands and placed them on my bare breasts. I struggled to free myself, but I couldn't get her 125 pounds body off of me. She moved her fingers together until just her thumb and forefinger rested against both of my nipples. "Nonononono!" I giggled. The evil grin remain in place and she slowly began rolling my stiff nipples between her fingers. "Come on Christine!" I pouted, gritting my teeth to suppress a moan.
The electric tingles in my body intensified as she showed no intention of stopping. I bit my lower lip, desperately trying to stop getting turned on by my best friend playing with my tits. My breasts had never felt like this before, the pleasure became so intense, it began to border on painful. Involuntarily, my hips began to raise as all those tingles began to converge in one spot. I held my breath, trying to keep it in, but suddenly a moan escaped my lips.
And with that, Christine was done. She got off me and laughed girlishly. "I'll do it," she decided, as if the torture she put me through was her price. "We both turn over at the same time, though!"
"Deal." I said, trying to catch my breath. Great, now I was locked into to wearing the bikini *and* I was super horny!
I finally put on the bikini top, adjusting both triangles to fit my breasts comfortably. I was happy with the amount of flesh it showed, and how it concealed just the right amount. I wrapped a slightly sheer black sarong around my waist and put on my earrings. We grabbed our beach towels and purses, donned our flip-flops, and headed out. Out of the beach house, across the street, and into the warm summer sun.
Christine stopped at the border between the road and the sandy beach. She looked at all the people around, realizing then just how many people would see her doing my dare.
"Chicken?" I teased.
That steeled her resolve. "No, are you?" she shot back.
No way I could back down now. "Not even close!" I said with bravery I didn't feel.
We found a spot a little ways from the main crowd, set out our towels onto the beach chairs, and lay down. I pulled off my sarong and tossed it at Christine with a laugh. Her eyes widened; I was really going through with this. She stuffed it into her purse.
We lay on our backs and soaked in the sun. Christine's suit had a tan-through fabric with a light green design on it. A black border outlined the suit. It fit her body well and was still sexy, even though it wasn't a bikini. Her large breasts strained the fabric and was sure to catch the attention of any guy walking by, even though not an ounce of cleavage was showing. The slightest hint of a camel toe showed just how tight the suit was on her. Her long dark hair was pulled back into a pony tail, and she hid her brown eyes behind sunglasses.
My white bikini reflected brightly in the sun, almost asking for people to pay attention to my tall, somewhat angular body. The triangle top covered my breasts well enough, though my nipples, still erect, strained at the tight fabric. The bikini's bottom was likewise triangular, just enough to cover the important parts, with side ties. Like Christine's, this suit would prevent tan lines too, but for a completely different reason. I had put my blonde somewhat curly hair up in a ponytail too.
"Fifteen minutes?" I asked.
Christine nodded. She slid her arms out of the straps and pulled her suit down just to her bust line. A little cleavage showed. She was preparing for a quick rolldown.
