When I was young my dad passed away. It was not long until my mother had us living with her new man and his son and daughter. They all seemed very nice. My new step sister Rebecca was very much a well built girl. A senior of 18. Her brother Jimmy was a year older and struggling to get a career started still living at home. At 18 myself I had just graduated and taking the summer to figure out my next move.
I pitched in around the house as both the other kids had jobs. Mom asked me to keep up on the laundry and clean up a bit. I used this as a chance to pocket some of Becky's panties and I even found her little stash of toys while putting her room together. Often i would slip in to her clothes and use her toys while every one was away. You see I was sharing a room with Jimmy so during the day alone was the best time. I had been stealing my moms clothes and using various other items to masturbate for about three years at this point so I kind of knew my way around the secret.
After a couple of weeks around July 4th I found a small box on my mattress one day. A note inside said "I hope you will not be offended but you can keep these for your self." Inside was a dildo and some clothes from Becky. So my step-sister was my best friend as we spoke in secret about all the things i was into and she became a great friend, after a week or so of nightly conversations.
At this time it was mid summer late July and Jimmy was out with a friend camping. I stayed up late watched a porn, slipped in to a pink bra and panty set, and found the dildo i was given by Becky. Now my step-brothers bed had a trundle roll out mattress that I used as my bed. So I'm on my bed full rodeo riding a dildo when I hear the step creak. In a panic I just toss the blanket over myself click of the tv and pretend to be a sleep.
Just as the door swings open I manage to lay down and in strolls Jimmy. He sees me sleeping and he slips into bed quietly. I am petrified I'm wearing panties and a bra while holding a dildo clutched in my hands and my new step-brother almost caught me. Heart pound I lay still. Just then he clicks on the tv. At this time I am mortified the movie I was watching was still playing. A BBC all anal scene was just wrapping up with a girls asshole dripping cum. I thought for sure i was dead meat. But Jimmy just said "well alright" and started watching the next scene.
After a few minutes he fast forwarded the movie to a part where the girl was choking down a big black cock and I heard the all too familiar sound of a beat off session start. From his position on the bed he couldn't see me. So I lay there on my backing waiting for him to be done and fall asleep. In a short few minutes he groaned and I smiled he was almost finished. Then there was a warm liquid on my face right square in the mouth. It startled me I almost yelled but I knew I couldn't. Unfucking believable but Jimmy had jacked off and shot his load. With his position on the bed the first shot went over his shoulder and landed on my lips.
I did not know what had happened at first. But when it startled me I got my first taste of real cum. It was amazing before I put my thoughts together i blurted out "nice shot." Jimmy stopped and after a second I leaned up and with a finger I pushed his cum off my lips and into my mouth. Then licked my fingers.