Wednesday, June 4th, 2008. High school was over and my leaving for college in Oregon loomed in almost three months. My parents told my twin sister Abby and me that we didn't have to get summer jobs, to enjoy our summer break, although we still had our chores to do around the house.
So it was that I was pushing our mower over the lawn when Abby came out of the house wearing a straw hat, sunglasses and a bright green string bikini she had worn the year before that now barely contained a body that she certainly had not possessed that summer. Her boobs had gained at least a cup size while her abdominal muscles were showing more definition than ever. The slightly chubby teen she had been when we started high school was long gone. In her place was a phenomenally beautiful young woman. "Damn, she got hot," I muttered, hoping the motor of the mower would keep her from hearing.
How had I not noticed her blossom over the winter? That's right, she wore baggy sweaters almost all the time. Even when spring began, she switched to baggy tshirts which gave only a hint that her chest had gotten bigger. This was the first time I'd seen her in a bikini since the previous summer ended.
She sat in one of the pool chairs and started spreading suntan lotion onto her arms, making those boobs bounce in front of her. Concealed by my own sunglasses, I couldn't pull my eyes away from her, steering the mower more by peripheral vision and memory of the yard than anything else.
"Fuck. Why does the hottest eighteen year old in Nashville have to be my own sister?" I asked myself. As I watched her spread lotion across her chest, I felt my cock start to respond. "Stop it, stop it, stop it," I pleaded with myself. She had already accused me of being a pervert because she had walked in on me a month earlier watching porn on the laptop computer I'd gotten for my 18th birthday, when the actress on screen was a blond like her, but much older and nowhere near as beautiful, I thought. The last thing I'd need was Abby seeing me with an erection in my athletic shorts. They were baggy, which would hopefully hide the bulge in the snug boxer-briefs underneath.
I managed to finish the last of the lawn, without accidentally running over any of Mom's flower beds, and rolled the mover into the shed, topped off its gas tank, detached and emptied the clipping bag into the compost bin, and reattached it. As I came out of the shed, planning to head inside for a decidedly cold shower, Abby asked, "Can you spread tanning lotion on my back, Dave?"
"Ummm, sure, sis," I responded, coming around the pool to where she was letting the back of the lounger down, so she could lay flat across it, face down, sweeping her long blond hair away from her neck. I sat by her thighs on the left edge of the lounger, grabbed her tube of suntan lotion and squeezed a dollop onto my left hand, then spread it to the right hand before I stroked both hands across her upper back and shoulders.
"I saw you watching me," she said, in a matter-of-fact tone. "Don't deny it."
Caught. "Sorry, sis," I whispered, as I moved to spreading more lotion onto her lower back.
"I'm not bothered," she said. "Hell, it's flattering. Even if you are my brother."
"You think I'm a pervert," I said.
"No, I only ever said that to get under your skin. At least, you're no worse than any other guys our age, I guess. I'd still be inside or over at Debra's house, if I really wanted to avoid you seeing me. But I want to tan, so I guess I'll have to put up with my brother seeing my boobs," she said, hesitating before adding, "I might even let you see me with my top off, if you won't tell Mom. I'd like to tan topless."
"That'd be pretty inappropriate, Abby," I said, realizing how much I wanted just that. I'd reached the waistline of her bottoms and reluctantly took my hands off of her, saying, "All done," as if that was going to change the subject.
"Oh, c'mon," she said, turning onto her right side to look back at me with her blue/gray eyes, giving me a clear look at about an inch of the underside of her breasts, where the too-small bikini cups had crept up. "We both know you want to see them and you're not going to be able to stop thinking about it, now that I've mentioned it. I want you to. You're the only guy I trust enough to give me an honest opinion."
"That you have gorgeous tits? I don't need to see your nipples to tell you that."
"Not just that," she said, before sighing. "Fuck. This isn't going the way I planned it out. So, I'm just going to be honest. I want you, Dave. I want you to be my first lover, okay?" Her left hand reached for my crotch and stroked my half-hard cock through my shorts.
I went blank, for maybe 30 seconds as my cock thickened more under her hand, before I could speak again. "You want us to commit incest."
"Unless Mom miraculously reveals that I'm adopted, to explain why I'm the only blond in the family, that's what it would mean, yeah. But I don't much care about the law or the taboo, other than not wanting to get caught. I love you, Dave. I think I might even be in love with you. I want us to express that love, physically. At least once, maybe for this whole summer. Then we can move on to college and find spouses down the road, okay? You'll be on the other side of the country most of the year. I'm on birth control, so we don't have to worry about pregnancy, which is the main reason for the incest taboo, at least between siblings in the first place. Please?" she whined.
"Jeez, Abby. You've got your mind set on this, don't you?" I knew that meant trouble. I just didn't know how much.
She simply nodded, not saying anything more.
"That means that if I say 'no' today, you'll just ask again tomorrow," I said. "You know that I'll eventually cave in, so I'm better off just saying 'yes', now." Would I ever learn how to make her accept a 'no'?
Abby rotated her body next to me, moving into a sitting position and giving me a devilish grin before leaning into me to kiss me. Like-a-lover kiss me. Her bountiful boobs pressed into my chest, her nipples poking into me. Her right hand slid into the leg opening of my shorts to grasp my cock by the root, solid as a rock. "Gawd, you're huge," she muttered, between kisses.
My shaft was 7" and maybe a little thicker than average, but certainly not porn-star big.
"How many cocks have you held, to make that comparison?" I asked. "Because I'm not really that much bigger than average."
Abby replied, "A couple. I gave my prom date a hand job at the end of the night, but nothing more, hoping for a day like today with you. Plus, I've checked out the few sex toys Mom has hidden in her bedroom. They're smaller than you, although I've certainly seen bigger dildos online. Most of those scare me. I want to see it."