It was one week after the first time I came on Rachel's face. Rachel and I were in the living room while our mom was getting ready for her yoga class. I was playing some games on the computer while Rachel watched TV.
"What do you guys want me to bring home for dinner tonight?" Mom asked as she was on her way out the door.
I loved Friday evenings lately. I get to fool around with my beautiful little sister, and then we get to have takeout food afterwards. We couldn't decide on what to get, so Mom told us to text her in a little while if we decided on something.
We listened to the car start and pull out of the driveway. When we were sure our Mom was gone, we wasted no time. I turned the computer chair to face my little sister. I pulled my shirt off over my head. Rachel pulled my pajamas and boxers down and started licking my penis up and down along the underside of it. Earlier in the day, we had made plans.
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"So," Rachel had said to me earlier that day, "I think your cum really helped clear my face up. See?" She smiled and flashed her cheeks at me. It had.
"You have cleared up a bit," I replied. "You look great. Welp, you know where to find me if you need more..."
"I do need more," she said back to me, "Or, more like, I want more. But I want, like, more than last time. I want to edge you tonight when mom's at yoga."
"Edging huh?" I asked her. Rachel mentioned it last Friday. I hadn't been familiar with the term, but I figured what it meant. "How would you wanna do it?" I asked her.
"Like, all kinds of ways," she told me. "We can do whatever, we just can't let you cum. I want to keep you hard for an hour and a half before you cum. That'll give us 30 minutes to get cleaned up and relax before Mom gets back. I'll probably need a shower." She kissed me. She sucked my neck. She bit my ear. "I want you to cum all over me," she whispered. "I wanna be a mess."
I agreed.
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Rachel began to suck my cock. First, she just put the tip in, and played with it using her tongue. Then she slid the rest in, pushing it against the back of her mouth and down her throat. I stroked her soft hair. She came up for air with a gasp and giggled.
"God, I fucking love this cock," she said as she stared admiringly at it while holding it at the base. My cock was shimmering with her warm spit. She moved her hand up from the base of my penis and started sliding it up and down my shaft. She began to suck my balls, putting one in her mouth at a time, as she kept jacking me off.
Suddenly, my little sister stood up and pulled her shirt off over her head, showing me her big beautiful tits. I wanted to see her pink nipples covered in my cum again. She turned around and pulled her panties down.
She spread her ass open with both hands. "Lick my asshole," she told me. I sat up and put my hands around her waist, pulling her ass towards me. I buried my face in between her asscheeks, making out with her perfect pink asshole. "Mmmm, David," my sister moaned.
"Hey, uh, we should get comfortable," my sister said, looking back at me. I broke away from her delicious ass. We got up and moved over to the couch. I sat down first, and made sure we had the TV remotes nearby, as well as our phones. Rachel sat down on top of me, straddling me. She pushed her warm vagina onto my cock, grinding on it. I squeezed and sucked on her big tits.
"You can't go in," she half-whispered, half-moaned to me while still grinding my dick up and down on her vagina. She was so wet, so warm, so slippery and smooth.
"Yeah," I admitted. "I'd probably cum way too fast if we did that. Your pussy feels too damn good."
"Tell me even if you just *think* you're getting close. You can't cum yet." She moaned as she kept grinding on my hard cock. She get up off of me, and sucked her juices off of my cock. She spat on it, stood up and sat down next to me. She put her hand on my dick, and rubbed her spit all up and down my dick. She started to slowly jerk me off.
"Hey, turn on the TV," she said as she kept rubbing my dick. "We got a bit of work ahead of us, might as well watch some Schitt's Creek while we're at it."
I grabbed the remote, which was laying off to the side on the couch. I fired up Netflix, and put on Schitt's Creek. Pretty funny show. It's got the Dad from American Pie, I love that guy.
We watched a couple of episodes while Rachel jerked me off and just generally played with my dick to keep me hard and build up a big load. I'd noticed sometimes when jerking off that there'd be more cum if I'd taken my time. But I'd never done anything like this before. Rachel was keeping me rock hard, and for a long time.
A third episode started to play. At this point, Rachel had been keeping me hard for around 50 minutes. She re-positioned herself, and started to suck my cock in a slow, loving, sisterly way. I could feel her soft moans as my cock slowly entered and exited her mouth. She gently played with my balls, but that kind of hurt. I batted her hand away from there.
She came up off of my dick, her mouth making a "Pop!" sound as her lips disengaged. "Awe, you got blue balls, huh?"
"Yeah, I think so," I said. "It kinda hurts."
"Don't worry," she replied, "you'll be releasing soon enough. All over your baby sister," and she quickly went back to slowly sucking my dick.
She alternated between sucking and slowly jerking me off during that third episode. A fourth began, and we figured we might as well just let it play. Rachel continued to keep me hard with her mouth and hands. We agreed that after this episode, we'd better finish up with our little experiment. My balls were aching, so I agreed.