Jackson (Jack for short) and Ben had been friends for as long as they could remember. They played little league baseball together, as well as high school basketball and baseball, were neighbors, took all the same classes in high school, and were going to the same college. They also both not only had birthdays in July, but shared the same birthday! Hell, their baby showers were thrown together! It's no surprise, then, that their eighteenth birthday was a blast for both of them.
Ben's house was bigger, with two stories and a wraparound porch, so both families gathered there to celebrate: Jack's parents, his older brother, and his grandparents along with Ben's parents, his younger and older sisters, and his grandparents. After the party, both boys went out and exercised their rights as adults, buying condoms, cigarettes they'd never smoke, and porn. Then they went back to Ben's for the night. Jack stopped off at home just long enough to hide the porn, shove a condom in his wallet (as if), and head back over to Ben's. Ben's parents had had to leave right after the boys' party for a conference six hours away and wouldn't be back for a couple of days, but Ben and Jack couldn't care less. That just meant they could be louder! Ben's younger sister, Jenna, was staying with friends, as always, and his moody older sister, Cameron, stayed in her room on the computer all the time. She was very social, but her parents teased and bothered her incessantly when she was home, so if she had to be home for the summer, she was seeing them as little as possible.
To be honest, Jack thought Cameron was hot. She was only a year older than he and Ben, at nineteen, so he had watched her grow from a skinny, brunette stick of a girl to an extremely attractive woman, and all at the same time he developed his own physical attributes. She tended to wear too much makeup and baggy clothes, but she ran long distance for their school's track team and played tennis in the off season, so her body was in perfect shape. Her eyes were huge, and a gorgeous emerald green, supported by high cheekbones and supple lips. She just liked to hide it with heavy mascara and thick lipstick. Cameron's breasts developed early, so she was the first girl boys ever noticed, and her figure was great. Jack couldn't understand why she always dated total assholes; she either had no self-esteem or some deep-seated problem she was dealing with, and both were a shame.
More than once he caught himself wondering what she looked like underneath her perpetual hoodie/sweat pants combination, and slowly rubbing his groin at the thought of her in the locker room or shower. He always took the chance to glance in the laundry room at his best friend's house to see what panties she'd been wearing lately. For all her mild demeanor and introverted activity at home, he knew she had to be sexually active and was strikingly beautiful, and her thongs showed it. She loved lace in intricate patterns, bows and charms, and the color green. He almost stole a thin lace G-string of hers from a laundry basket once, but decided that not only was it probably expensive, but it wasn't worth the mental anguish to desire her. She was distant, older, his friend's sister, and out of his league. Despite his efforts, he desired her intensely, of course, so he might as well have taken the panties anyway. He just wished there was a way she could think of him in the same manner. One time, a year previous, Jack thought she had finally seen him as a man and not just her brother's friend, and she might have been worth pursuing then, but that opportunity was past.
Ben's parents had bought a huge aboveground pool at a bargain price in middle of the summer, and both kids immediately had friends over, so the backyard was crowded with teens. Jack and Ben were both seventeen, as were most of their friends, and Cameron's demographic was the same but a year in advance. It was one of those rare times Cameron eschewed her sweats for a bikini (dark green, of course, with pink polka dots) and joined the adolescent fun. They all swam together, some of Ben and Jack's friends hitting on Cameron's, and they all had a good time. The girls swam, then oiled and sunned. The boys swam, fought, splashed, threw the girls into the water, and thought about girls sunning and oiling. Lunch was provided, with lemonade, and the vast majority of the day was frittered away in frivolity.
Things began to slow down in the late afternoon, and friends slowly started drifting away to cars and homes of their own. Jack had been lounging in the sun for a couple hours, Ben was "escorting" one of Cameron's friends to her car, probably hoping to score a date. Cameron herself had gone in for towels, though they were unnecessary given the egress of all the revelers. Jack was as relaxed as could be, just soaking up the sun's heat, and thinking of Cameron's ass in her bikini. He had been thinking of that ass, and her body in general, with increasing frequency the past year or so. She had become an object of his sexual affection whether he wanted her to be or not. Before he could stop it, the sun and his mental image had raised his cock up to full attention in his swimming trunks, visible to any who could see him, a veritable umbrella pole over the deck chair in which he was splayed out.
Quickly, he jumped up and ran for the house, needing the air conditioning and a cold drink to take his mind off Cam's curves. He bounded for the glass doors to the kitchen, his boner swinging in front of him. Up to the deck in two strides, he looked down to step over the door frame onto the kitchen tile and BAM! He collided with Cameron returning with her towels, the last person he wanted on his mind. He staggered backward to the door, keeping his balance, but Cameron forcefully sat down on the floor, knocked to the ground, tits bobbing in her scanty top, and towels everywhere. She looked up with wide eyes, startled, and the first thing she could see was Jack's dick at eye level. It was so close she could see the rim of his cockhead outlined through the fabric, and it pointed straight at her, almost in accusation. She couldn't help but gasp as she reflexively gauged its rigid girth. She looked away quickly, gathering towels, but not fast enough.
"G-g-g-gosh I'm sorry, Cam!" Jack said, mortified at his clumsiness and his all-too-obvious arousal. "Are you alright?" He silently willed his erection to soften, but if anything her gaze had solidified it. He saw her initial stare and knew the first thing in front of her eyes and at the fore of her thoughts was his boner. He grabbed two towels as fast as he could, trying to look nonchalant as he held them in front of his groin.
"I'm fine, Jack, but for God's sakes do you have to run everywhere?" She rose to her feet, her eyes level with his chin, looking up at him and smiling. "A bruised tail bone is just what I need for my run tomorrow morning. If I miss one day, I'll miss five, then weeks! Then I'll be fat and out of shape, and then I'll really catch shit from Mom and Dad! It's all they can do to keep from nagging me in my sleep! Give me those."