That night, Lucas ran the experience over and over through his mind. Stroking himself, he would picture the way Elisa's lips looked wrapped around the head of his cock. The way her small, pale breasts pressed against Emily's as they shared his cum in a deep kiss. He came pretty quickly, letting it coat his hand and cock, and continued stroking. He imagined it was Ellie's hand on him. Then, he thought of the way it had felt to have both his sisters touching and exploring it.
Emily, beautiful Emily fingering herself to orgasm, her other hand buried between her twin sister's legs. Lucas came again without ever going soft, and fell asleep covered in his own cum.
As Lucas walked nervously down to breakfast, he wondered how his sisters might feel about the previous night, having had time to think about what they had done. What if they told their mom? But, they couldn't do that. Unless, they somehow blamed it on him. But, breakfast was the same as it always was. Mom would be home early that night, and the girls were sleeping over with the squad.
"Oh, Aunt Jenna has a seminar tomorrow, and needs a babysitter. She'll pay, but you have to get over there pretty early. How about it, Lucas?" His mom asked over coffee.
"I have a paper due on Monday. It's on the effects of-"
His mom held up a hand. "You lost me at paper. That's okay, I'll just go. I haven't seen her kids in months, anyway."
Lucas didn't really have a paper due, but he certainly didn't want to watch his bratty cousins all day. With his mom home all day today, he was planning to take advantage of the empty apartment tomorrow for a lot of time masturbating. That was pretty much all he wanted to do anymore. Especially after that first glimpse of his sisters.
Emily called shotgun on the way to the car. They only lived about fifteen minutes from the school, but it was usually fifteen minutes of nonstop chatter of whatever teenage girls talk about. That morning was the complete opposite, until Lucas decided to break the silence.
"Um. So. About yesterday?"
"What about it?"
"I mean, it was wrong. Brothers and sisters aren't supposed to do stuff like that." It wasn't how he really felt, but he thought he should say it.
"Stuff like what?"
"You know what."
Emily proffered a wicked little grin and said, "You mean like sliding my hands up and down your hard cock? Or how you filled Ellie's mouth with your hot, sticky cum? Or maybe it was watching us push your cum back and forth with our tongues?"
Elisa laughed from the backseat. "God, Em, you sound like a total slut."
"Yeah, well, I feel like a total slut. Seriously, Lucas, what you saw us doing before. We were just curious, and it felt pretty good. But ever since I saw your cock, I've been horny like nonstop. God, just talking about your big, beautiful dick is getting me wet." Emily giggled as she looked down at Lucas' lap. "I guess you like it when I talk like that. Did I make your cock all big and hard talking about how much I want it? Can I see it? Can I touch it?"
Her hands were already undoing his jeans and fishing out his erect cock. She wrapped her soft hand around it and began stroking. Lucas glanced over his shoulder to see that Elisa was leaning forward so she could see. She had hiked up her skirt, pulled aside her panties and was rubbing her pussy. Lucas struggled to keep his eyes on the mostly empty road.
The car swerved and Lucas pulled it straight with a gasp. Emily had lowered her head into his lap and taken half of his cock in her mouth. Her velvet tongue slid hungrily along his shaft as her lips locked down and she sucked hard. His hips rose and he felt the head of his cock hit the back of her throat. Her head jerked up as she gagged. Then, she drove her mouth back down. She began bobbing her head up and down, her hot, wet mouth filled with his throbbing cock. He hit the back of her throat over and over, and she gagged a few times, but managed to fight through it.
In the backseat, Elisa had thrust two fingers in her wet pussy. She worked them in and out as she rubbed her clit with the middle finger of her other hand. Watching her twin sister sucking their brother's cock, she started cumming with a loud moan.
"Oh god, yeah Em, suck his big cock. Ooohhhh, fuck, I'm cumming, yes, god yessss."
Hearing his sister's orgasm, Lucas began pumping cum into Emily's mouth faster than she could swallow. Cum dribbled out of her mouth back onto his cock, and she bobbed up and down, slurping it back into her mouth. When he finished cumming, she sat up, with a huge grin, lips glistening with his cum. She licked her lips, and giggled.
"That tastes so good. I didn't think it would, but when I tasted it yesterday, I knew I had to have more. Did you like it?"
"Jesus, Emily, that was the greatest thing I've ever felt."
----
Class and work that day passed in a haze. Lucas was ordinarily an excellent student, but there was simply no way for him to focus on anything but his sexy sisters. After school, he went home. He thought about going to the game, but none of his few friends would be there. Also, seeing Elisa and Emily in those little cheerleading outfits would just make him horny.
"What do you want for dinner?"
Elisa's pussy, Lucas thought, or Emily's. Either one would be fine. "Doesn't matter, whatever you want, mom."
"Well, I think I'll just order something."
"Sounds good."
Lucas spent most of the night in his room, doing homework, then getting on his computer for some gaming. When his mom went to bed, he went looking for some porn, but he couldn't stop thinking about the twins.
Quietly, he opened his door and poked his head out. No light was showing under his mom's door. He crept down the hall, and listened for a minute before slipping into the twins' room. Stroking his cock inside his shorts, he carefully picked through Elisa's drawer of bras and panties. Then, he noticed a small pile of clothes next to Emily's bed. There was a similar one near Elisa's and Lucas' hopes and level of arousal rose. In each, he found a pair of panties they had worn recently. Emily's were some green stretchy material and Elisa's were satiny and blue.
He rushed back to his room and stripped naked. Laying on his bed, he wrapped Elisa's panties around his cock and began stroking, while he brought Emily's to his face and inhaled the musky scent of her pussy. He thought about what it would be like to lick those sweet lips, to dip his tongue inside her. He imagined her shudders of pleasure as he tasted her. He began licking the crotch of Emily's panties and was soon cumming into blue satin, coating Elisa's panties, which felt even better sliding up and down his cock. He fell asleep with Elisa's cum-covered panties on his cock, and Emily's over his face.
He woke hard. He must have been having a sex dream. He could still feel his cock engulfed in wet heat. Then, he realized it wasn't his imagination. His eyes opened and he saw Elisa's mouth on his cock. She had her hand wrapped around it, sliding up and down with her lips as she bobbed her head. Emily looked up from next to her, where she had been watching intently.
"Ooh, he's awake." But, Elisa ignored her. "You were quite a sight when we came home."
Lucas blushed, but realized his sister was more turned on than anything else. With his little sister's mouth enveloping his cock, he assumed the girls weren't angry about what he'd done to their panties. He decided boldness might be his best course of action.
"I loved the smell and taste of you on your panties. Can I do it for real?"
Emily squealed in delight and quickly stripped down. Her eyes flashed in anticipation, hungry for the feel of his mouth. She climbed on top of Lucas, straddling his head, and lowered her already wet pussy to his waiting mouth. Her eyes closed and she moaned softly, as his hot breath washed over her. He licked softly along her lips, and she tried to take her time enjoying the tender attention, but her body took over and she ground her pussy against his mouth. Lucas drove his tongue deep inside her, trying to lick everywhere he could. The taste of his sister's pussy was going to drive him over the edge when Elisa pulled her mouth off his cock. This was almost a relief, as now Lucas could focus entirely on pleasuring his sister with his tongue and lips, although that's when he realized there wasn't a whole lot more he could do. Emily was kneeling over him, with his arms pinned under her legs. The most he was able to do was keep as much of his tongue in her as possible while she rode his face.
"This is so hot, Em." Elisa's voice came from nearby. He caught glimpses of his sisters kissing. Elisa's hands were all over Emily's breasts, rubbing, squeezing, pinching and pulling nipples. Emily began moving faster, her hips bucking harder as she began to cum.