Cleaning...and peeping

I scrubbed the kitchen for another 20 minutes, grumbling about that bitch and confused about why she kept slapping my ass, and about what she said as she left. How did I look like a bitch? And why didn’t she say it to me like she normally would? Before I could contemplate further, steph yelled down to me with another task. “John! Vacuum the first floor now!”

I stared up at the ceiling, glaring at where I knew her room was above me and yelled back. “Why don’t you do it? I just finished cleaning the kitchen!”

“Just fucking do it before I come down there and kick your ass bitch!” I wanted to stand up to her or to at least argue more, but I knew from experience that would end very poorly for me, and with her recent obsession with spanking, I rubbed my ass in ghost pain from the thought of it.

With a resigned sigh I brought out the vacuum and let the loud noise lull me into thoughtless cleaning. I did the den, hallways and dads office before reaching the stairs. I debated whether or not I should do them, steph had said to do the first floor, but knowing her she’d flip shit if I ignored the stairs that were “connected to the first floor.” She really is such a bitch.

The vacuum made quick work of the carpeted stairs leading up to the second floor, and figuring the more I did now, the less I had to do later, I started doing the upstairs hallway. I was just getting going when I heard something coming from steph’s room, but I couldn’t tell what. I smiled to myself as I thought that this was a golden opportunity to get some dirt on her. If I left the vacuum going as cover, she wouldn’t expect me to be able to overhear her.

Tip-toeing to her room, I moved slowly to avoid any creaks or anything that could give the game away. I reached her door without incident, which was open a crack and pressed my eye to the crack as the vacuum hummed behind me. I scanned the room until I found my sister laying on her bed...butt naked. She was covering her mouth with a delicate hand to muffle her moans as a massive black dildo was thrust into her deeply and slowly by her other hand. Her big perky tits bounced as she slowly fucked herself, increasing the pace slowly as time went on. Her hand moved from her mouth as it slipped down to tease the erect pink nipple on one of her perfect tits and I heard a delightful moan escape her lips as her face started growing redder by the second.

I knew I shouldn’t, but it was too hot for me not to and I was so hard from watching. I whipped my dick out in the hall and started stroking my member, finding it already slick with precum. I started stroking myself faster to match my step sisters pace, imagining it was me she was riding so enthusiastically. She then bent over and stuck the suction part of the dildo on the foot of her bed frame and started riding with reckless abandon, no longer trying to contain her moans, probably confident the vacuum was loud enough to drown her out. She must have found her g-spot because she let out a high pitched squeal as she impaled herself in her new bent over position and j felt myself tense in response. I couldn’t help but let out a gasp as I unleashed a torrent of cum into my hand and tensed in case she heard me or saw me with cock and cum in hand...