My sisters make my cock hard

I have 3 sisters, 1 older and 2 younger than me. At some point I have thought about fucking all of them. I'm not sure if this is normal or not, but I like to think that any guy who has a sister that is at least somewhat attractive has thoughts like this at one point or another. Especially during the teenage years and early adult life when your urge to breed is at it's strongest.

Sometimes I wondered if my 2 younger sisters had similar thoughts about me because it almost seemed like they were daring me to fuck them. They would both on occasion walk around the house in nothing but their panties and a crop top. Parading around our family home flaunting their gorgeous plump yet firm juicy teenage ass! Sometimes they would lie on their bed (belly down ass up) reading a book or w/e in those same skimpy getups with their bedroom doors wide open and facing away from the direction of the door so their ass was on full display.

Needless to say them presenting their asses to me like that be it on purpose or accedentally made me pop a boner and go into my room to jerk off several times. Thinking about my sisters asses as I was stroking my hard cock! I could feel my dick getting harder and throbbing violently as I pictured my younger sisters teenage asses in my mind. I usually finished to some porn clip so I wouldn't feel too weird or guilty about masturbating while thinking about my sisters ass.

Then came the incident that made the seed of incezt finally take root in my mind so I could never get the idea completely out of my head ever again. Several years ago while both me and my youngest sister were still living at home together something incredible happened.

Me and my sister were home alone, by this time she had stoped carelessly walking around the house in those skimpy outfits and it had been years since I ever thought about her in a sexual way. To boot she now had a boyfriend, so I guess her being already "taken" also helped. Either way after we had dinner I went up to my room to have a nice edge session, this was gonna be another great evening of masturbating to porn. (or so I thought) The first hour was just like any other, I found some nice hot kinky porn and started fapping.

I usually had to try and suppress the noises while jerking off since my sisters room was right next to mine. So I was fapping furiously while trying to make as little sound as possible when all of a sudden after edging for about 1 and a half hours I started to hear moaning other than from the porn in my headphones.

At first I thought that maybe I was just imagining things or that perhaps a video had started playing on another tab without me noticing. But after a quick scan of my porn tabs that was not the case. I shrugged it off and whent back to fapping. Then for the second time I heard the sweet erotic sound of a girl moaning, but it was different to the porn video I was currently watching and this time I was sure it sounded like the noise was coming from outside of my headphones... no WAY??!!! Is that my sister moaning?!! I muted the porn and kept on jerking off when for the third time I heard some of the hottest most erotic moaning ever, those sweet whimpering noises that made my cock throb were coming from my sisters bedroom!

I knew she hadn't seen her boyfriend for a whole week, so she must be blowing off some steam using a dildo. And she's probably not worried about making too much noise because she knows I usually have headphones on while in my room sitting at the computer. But not this time, by now I had removed the headphones and placed them on my desk. I needed to hear her more clearly! With no other noise to distract me I began listening intently, as I sat there jerking my hard cock I could hear the wet sloppy sounds of my sister pounding her pussy with that fake cock and the moaning became even louder. There was still porn videos and animations playing on my screen, but they might aswell not have been because at this point I was fucking my fist to the noise coming from my sisters bedroom. Her sweet moans were making my cock rock HARD and throbbing like fucking crazy!!

I started having thoughts like "I wish I could just barge into her room and give sis the dicking she's craving!"
"I would give her this big hard throbbing cock, I don't give a fuck about being her brother!"
"That soaking wet pussy needs a good fucking, and her brother wants to give it to her!"
"I bet my rock HARD throbbing cock made of real flesh would make my sisters pussy feel way better than that piece of plastic!"

At this point I didn't care at all about staying quiet anymore and I'm sure my sister could hear the sound of my fist hitting my crotch with every stroke, making a loud *plap* aswell as my balls that would jiggle up and down as I was furiously pounding my cock and hit the edge of the seat on my desk chair with an audible *smack*. I was even hoping she would hear me as I was thinking "Can you hear how hard your brother is masturbating to the naughty noise you're making sis?"

The sound of my sister fucking her wet pussy with that dildo and her incredibly sexy moaning was driving me fucking CRAZY!!! I made sure to pick up the pace and masturbated even faster and harder. "I'm gonna cum whenever she cums!" After 30 minutes I could hear her orgasm and her screams of pleasure made my cock explode! I jizzed all over the floor to the sound of my sister cumming! As my cock was violently throbbing and spurting semen all over the place I remember thinking "I wish I could have blown this load balls deep inside my sisters pussy!!"

To this day it is one of the best faps I have ever had. Even though my sister ruined my plans for edging all night long, I really didn't mind blasting sperm like a fire hose to the sound of my sister orgasming after only jerking off for 2 hours rather than the 6 I had planned. :P