"Jeremy?" I dragged my eyes and mind back from the building cumulous clouds over the mountains to the west of our backyard to answer my sister, "What is it Chris?"
"Do you think about girls very much?" Chris' question finished the task of bringing me back to the present.
Chris and I are both eighteen now. Not twins but both born in the same twelve-month period. Chris was born in December and was too young to start school when she was five, almost six and I was born in October, less than a year later, so that we started school together and went all through the grades and middle school together. Now, we were eighteen and would soon graduate from high school.
"What do you mean by, do I think about girls very much?" I asked as I rolled my head to see my sister where she lay on a poolside lounge dressed in her favorite bikini. It was one of the first really nice days of the year and, with no classes that afternoon, we had decided to take advantage of the weather and the time off to laze in the sunshine. As I said, Chris was dressed in a bikini and I wore only my Speedo trunks from last season. Both of us had grown since the last time we wore our suits and it was obvious that we needed to do some shopping for new ones that would fit us better.
The top to Chris' suit never did completely hide her budding, youthful breasts. Now, this year, it barely covered her nipples and aureola. The bottom half of her bikini was just barely equal to the task of covering the most important part of her anatomy. My suit, on the other hand, never did a good job of hiding my manhood. At the first hint of arousal, I had to get into the water and hope that no one would notice or reach for a towel to hide my obvious erection. This year, at least to my mind, I always looked as though I was about half hard. Any excitement at all would cause the front of the suit to tent and the tip of my cock to appear above the elastic waistband. I tried bunching my dick down around my balls, but that didn't work out well either, as I always looked as though I had a large baking potato stuffed in the front of my suit. Besides that, any sort of erection at all became very painful with my cock curled near my balls.
I looked closely into Chris' face as I waited patiently for her explanation and either my looking at her or the pending question, one, caused her to blush. She took a deep breath and said, "What I mean is, do you ever wonder what a girl looks like without clothes?" 'Oops,' I thought, 'what's this all about?'
Aloud, I said, "Chris, of course I do. Wouldn't be human if I didn't. Why do you ask?" Chris was very serious as she said, "Oh, I don't know, stuff the girls are always talking about I guess."
"You mean girls spend time discussing what other girls look like naked?"
"No, silly. I mean that girls are forever talking about how nice guys look, how they would like to see their nice, tight buns, how long his penis might be - stuff like that."
Cautiously, I said, "Well Chris, I guess it is just natural to wonder what members of a different gender look like under their clothing, and, yes, I suppose I wonder as much as the next guy. Maybe even more."
My penis gave a familiar twitch and I reached for a nearby towel so that I would not have to embarrass myself and Chris said, "What's that mean, maybe even more?" I gave my sister a quizzical look and said, "This is on the level, right? Its kind of embarrassing talking about what women look like under their clothes when we are out here without much on."
Chris said, "Oh I guess that I'm talking about what people look like naked, not just girls or guys." She paused for several moments then said, "Ok Jeremy, what I suppose and I know that I'm not expressing it well is, do you ever wonder what I look like naked because God knows, I spend most of my time when we are out here like this, wondering what you look like without your suit on. Dad too, for that matter. I guess the thing that really bothers me is if I am a pervert or something because I want to see my brother and my dad naked or is it normal for everyone to wonder about stuff like that."
I grinned and said, "Chris, for whatever it is worth, you are not a pervert." I often wonder what you, and Mom as far as that goes, look like naked even in the wintertime when we are wearing snowmobile suits." I chuckled and said, "Of course, I find myself wondering more when I can almost see everything, like now for instance." Grinning, I added, "Why do you suppose I spend so much time on the water or with a towel in my lap?"
"Because you have a hard on? Oh wow, is that what thinking about this stuff does to you? Fantastic!" Then Chris surprised me and said, "Well, I guess you should know what thinking about this stuff does to me," and pointed at a widening spot of moisture in the crotch of her bikini.
Our conversation was interrupted by Mom's voice coming from the open window that was just above our heads as she said, "Hi kids, your conversation is too interesting for me to miss any of it. Why not wait for a few minuets and I will come out and join you?"
A few minuets later, I heard the back door close and then Mom came into view. She had changed into her bikini and was carrying a towel but she wasn't wearing a cover-up robe. It was obvious that Mom had put on a couple of pounds, weight that her swimwear clearly did not cover adequately. Mom saw my appreciative look and giggled, saying, "Yeah Jeremy, I know. I could just as well have left this thing off for all the good it does to hide anything."
Mom dragged a lounge around until she could lie on it and talk without having to strain to see either Chris or me, then once comfortably ensconced on a lounge, said, "You kids will have to excuse me. I really didn't mean to eavesdrop but I couldn't help overhearing your discussion and, Jeremy, your statement about wondering what I look like naked caught my attention. Does a young guy like yourself really spend time wondering what an old broad like me, his own mother, looks like naked?"
"Uh, well Mom, I... Oh I don't know," I stammered. Mom giggled, sobered and said, "Don't be bashful or shy, either one of you. It sounds as though we should have had this conversation a long time ago." She turned to Chris and asked, "God, don't they teach any of this stuff in Sex Ed?" Chris snorted and said, "Hell Mom, they don't even show good pictures of naked people. They just use cutaway drawings of female and male reproductive organs. Even at that, the penis looks like some kind of a limp, dangling thing that no one in their right mind would ever believe would actually fit inside a woman an impregnate her."
Mom laughed and said, "Well, if that's the case, we have a real live dick right here that your brother might let us look at. For all of that, I guess it wouldn't hurt us to let him see the little bit of our bodies that he cannot already see either. In either case, I'm curious as to why you are holding that towel in your lap, Jeremy. You're not trying to hide an erection are you?" Before I could respond, Chris said, "Oh God Mom, look at how you have made him blush." In exasperation, I said, "Mom, if you must know this conversation has given me a hard on and the tip of my dick is sticking out above the waist of my suit." Mom said, "Well go ahead and show us then." Noticing my hesitancy, she added, "If it will be more comfortable for you, we all can stand, turn away, strip off our suits and then turn back around to face one another. Would that make it easier?"
We stood and while looking in another direction, I heard Chris say, "You know, I'm beginning to be sorry I ever brought all this up. Nothing was said about when we should turn around so, once naked, I turned and got back onto my lounge and had a delightful view of both Mom's and Chris' butts as they finished stripping. I had no idea that when bent over naked, a woman's labia were clearly visible between their legs but there they were, two of them in plain sight. Chris' was tight, plump and smooth with a light covering of blonde fuzz while Mom's, too, was plumpish but gaped slightly and was covered with quite a lot of brown curly pubic hair that extended all the way to her puckered asshole. My cock was hard as a rock but seeing Mom and Chris' pussies made me even harder.