Zack Branson was damn glad when he got home. The day had been such a drag, summer school, fuck, he hated it. After 18, he had hoped to be done with a classroom, but no. His grades weren't good enough for a grade 12 graduation, so he had to take a couple of classes to get his diploma. His Dad had drilled into him that schooling was everything, and no way were they going to have a son without a Grade 12 diploma. His step Mom was not so demanding, but since she was the step-parent, she deferred to his view.
Thinking of his step Mom brought back the memories...
It had happened 5 years ago, his Mom was killed in a car accident when her Ford skidded on a patch of ice and flipped into a ditch. God, it was such a horrible time, his twin sister Carla and him were like zombies, it seemed so unreal.
Four years later, his dad met Melissa Jones, a cute, buxom redhead, on a blind date. She was two years younger than their Dad and had been divorced for the last 5 years since her husband ran off with a 20-year-old giggly piece of fluff.
Melissa and their Dad had hit it off almost immediately, and after several dates, and with the feeling increasing, he brought her home to meet Carla and him. It didn't take long, her friendly, easygoing nature, and her genuine interest in them and their lives, won them over, and they had warmed to her. It wasn't like Dad was cheating on their Mom, and Dad had been depressed and unhappy. With him being back in love, and Melissa obviously in love with him, they had given Dad the OK to pop the question, and 4 months later, they had a Step-Mom.
They also had a step-sister, the daughter from Melissa's first marriage, Laurie, she was 2 months younger than they were, her 18th birthday had been in April, while Zack and Carla's 18th birthday had been in February. Laurie was just as redheaded as her Mom, with a warm, inviting smile, she had the same friendly, easygoing nature as her Mom. After the first few weeks of getting adjusted, they bonded as a family.
Carla and Laurie both took to each other very quickly, it was just like having the sister each of them had dreamed of, and they became very close. They shared a room and even slept in the same queen-sized bed.
It had sure lifted the depression from their Dad, late at night, he could hear giggles, then soft grunts, gasps, and moans of pleasure from the master bedroom. Yes, Dad was out of his depression.
As for Zack, he had surreptitiously admired the views of his step-Mom and step-sister at the beach, using his sunglasses to hide his eyes, he'd drink in the views of their bikini clad bodies, the generous dairies, curvy waists, and sexy flaring hips, what a great twosome.
*****
Back in the here and now, he had hoped to score with one of the girls who was also in summer school. Jamie Richards, that cute brunette with the luscious lips, grapefruit-sized boobs that always seemed to have pokey nipples standing up, a sexy curvy waist, and nice wide hips. Mmmm, he could just imagine being between the spread of those thighs, and he was working up the nerve to ask her for a date.
He went upstairs and knocked on the door of his sisters' room.
"Come on in Zack."
He went in and stifled the gasp he was going to make, his sister and stepsister were lounging around, in just panties and bras.
His sister Carla noticed the widened eyes, and giggled, "What's the matter bro, never seen girls in their underwear?"
His step-sister Laurie added, "No need to be shocked, hell, these cover more than our bikinis."
Zack noticed that, but why was it more arousing to see them in panties and bras that covered more than their bikinis? Probably some holdover shit from the puritan days, when women wore bathing suits that looked like a damn muumuu.
Carla asked, "So how was school today, fuck, summer school, what a downer."
Zack replied, "Yeah, I'll be damn glad when it's done, so Daddy dearest won't have to live down the shame of not having a son with a grade 12 diploma!" he finished, with a derisive snort.
"Well, stick with it bro, I'm sure you'll get a reward for that."
He thought he saw a glint in her eyes and wondered what that was about.
*****
An hour later, his smartphone chimed. He answered, and was surprised to hear Carla's voice, asking him to come to their room. Her voice sounded funny, and he was wondering about why she had called him instead of just coming down the hall and knocking on his door. No matter, he headed down the hall, knocked on their door, and Carla replied, "Enter."
He did so, coming to a dead stop and staring at the scene. Both of them were fully nude, and Carla was sitting on Laurie's face, Laurie's hands holding onto Carla's hips, he could hear the wet slurp as Laurie's tongue busily licked and pleasured Carla's tight little cunt. Carla was facing Zack, she had her hands around the back of Laurie's ankles, holding her legs spread wide in the air, and smiling at him.
Carla and Laurie had waxed their pussy lips bare, and each had a nice, tidy bush just above in a matching triangle shape. Carla had a butterfly tattoo, it was like seeing it from the side, the wings poised in mid-flight, on her mons just to the left of her bush, and Laurie had a hummingbird tattoo just to the right of her bush. God, the matching of blonde and red, the sexy tattoos in such a sexy area, and seeing his step-sister's tight little pussy and asshole so nakedly bald and presented to his eyes, made his cock harder than ever.
Carla purred, "Mmmmmm, I discovered a few weeks ago, how great at pussy munching my step-sister is. We wanted to set this up after I took Laurie's virginity with my 7-inch dildo. But I only removed her virginity, we did not fuck wildly, once her cherry broke, we did not go any further, so you could get the honor of giving her her first real fucking."
