Showing her the ropes

A story about a brother and sister that began by chance after school

I came home from school every day to an empty house, which, for a teenaged boy, meant Jack off time!! I could barely wait and before the end of my last class I was distracted and getting hard already. Little did I know that my little sister was already home many of those times so my empty house jack off sessions were not so empty. I broke out lube and watched handjob cumshot porn and would make myself cum at least three times in a couple hours, it was awesome. One afternoon, my little sister knocked on my door and then came in and was weirdly fidgeting around and then blurted out that she knew I was masturbating every day and that her friends said that brothers can show you the ropes since they love to show off and it makes them cum even better than normal.
I was shocked but of course it made me horny as fuck to hear my sister talk about being shown the ropes. I asked her if she really knew what that meant and she said yeah, it's when your cum squirts out of your dick and each squirt was a rope. She said she'd seen it on porn sites but since I beat off every day it'd be better to watch it for real so will I show her the ropes. I said maybe if you play with your self at the same time so I'm not the only one naked. She said sure she liked playing with her self when watching porn anyway. I said how about now but that tomorrow will be even better because there'd be a big build up. She said ok, and she sat in my desk chair and started to remove her shorts and I quickly dropped my shorts and boxers, exposing my precum leaking rock hard seven inches that I then covered in Vaseline and started stroking as I stared at my sisters bald and juicy pussy as she rubbed circles and inserted her two middle fingers in and damn was that the hottest thing I'd ever seen and I told her so.
She giggled and said she loved how hard and that I was leaking already. I said yeah, it's precum, it just shows how excited I am and you playing with your beautiful pussy is very exciting. I asked her if she had any toys and she said no but wanted a dildo. I told her I'd get her a couple if she didn't mind and she said sure and she rubbed faster and I imagined her thrusting a big fat dildo in and out of her perfect juicy pussy and felt my orgasm building fast and I told her I was close so keep watching me as I scooted closer to her.
I can feel a big one coming sis, you ready, it's going to fly all over, to which she sped up more and said fuck yeah, cum all over brother, show me the ropes and I said oh fuck sis, here we go and I started just sliding up and bumping the head and boom, the first blast rocketed out as I aimed my spewing cum cannon at my sister and fired huge yummy rope after rope, hitting her face and legs and her hand and she moved her hand and let a couple hit her pussy and she was cumming as I was releasing an epic cumshot all over her. I think I squirted ten or twelve ropes that flew all over and I just sat looking at my beautiful cum covered Sister while slowly stroking my still hard horny cock, looking forward to more of these sessions. Sis opened her eyes and laughed at the yummy mess that was herself and my chair, then saw me slow stroking my hard cock and said that it must be true about how much better it is in person. I said hell yes and it's even better still if a girl jerks it off for you. She said uh uh, no way it gets better and I said it's easy to prove it, I'll show you tomorrow if you're willing to do it for me.
She saw how I was stroking and said I guess we'll have to try it but she's never touched a cock before. I said come here and scoop out some Vaseline and wipe it all over my cock, you might just get into it a lot. Sis got up and grabbed a wad and started slathering it on every inch of my cock and I moaned and said you're already doing it very good. She giggled and sucked in sharply, saying it was making her pussy throb and get wetter just by doing this, that's crazy. I said just stroke from balls to tip steady like I was and every few strokes, rub just the head several times and you'll see precum flow and that tells you how good you're doing, like now, you're doing perfect because my precum is really pouring out and my gosh sis, I am close and I can see you squirming around so your little horny pussy must be throbbing and all she could do is quiver and bite her bottom lip.
I said let me touch you, I want to make you cum and she whispered OK so I said even better sis, 69 me and I'll make you cum like never before. She said I don't know how so I said like this and I shifted around and then grabbed one leg and lifted her into place and she never missed a stroke on my horny cock. Before she could speak I used the entire flat of my tongue and gently lapped at her perfect little hard clit and she moaned out as I grabbed her ass cheeks with both hands and pulled her pussy down onto my mouth and started licking and sucking on her pussy and clit and she tasted so good I just kept assaulting her and she squealed out saying she was going to cum so hard and I ate her through a continuous multiple orgasm that made her legs twitch and shake for several minutes and then I barely contacted her skin as she recovered. Then I felt her mouth take me in over half way and I moaned loudly and she was a natural, taking me slowly inch by inch until my whole seven throbbing inches was in and part way down her throat. I said sis I'm going to cum so she bobbed up, took a couple breaths then swallowed me down and I exploded and violently spasmed shooting five ropes directly down her throat then just kept pulsing ten more times without ejaculating and much to her delight. She slid up and breathed deep and said OMG, all of that was incredible to which I agreed and said you're a natural sis, who would've guessed.