I was 13 at the time and my sister Tracy was 16. Story of my first hard on's
The day I got my first woody. My sister Tracy and I watched TV together in our pj's. She was short brunette, nice fit body, her tits though not massive, were a good size.
We were watching something I can't remember what, when I was in shock, I got a hard on. My first one, I was so shocked I stood up and looked down. My sister looked over at me and said, "excited are you?". I replied what is happening.
She grabbed my hand we ran upstairs to her room. She explained an erection in terms I could not understand. She asked what got me excited, I didn't know. my hard was gone by now. She asked me to look at her and see if I get one. Nothing. She looked disappointed. She said she had to work out. I sometimes stayed for the music. She put on shorts and a t shirt. As I was listening to the music I started looking at her in a different way. As I was watching, I noticed her tits bouncing and bam, hard on. I yelled at her, she stopped the music. I told her look at my hard on. I told her, her tits made me get hard. She laughed, "like all boys".
She reached in her desk and grabbed a ruler. Let see how big we can make it. I pulled my pants down.We measured 4". I got a twitch when she touched it. She then said if it was tits maybe she should take her top off? I said ok, she took her top off and wow, beautiful nice round tits, maybe 34C, she grabbed the nipples a little and they grew. I got more excited, we got ruler out 5". She then grabbed my shaft and slowly stroked it, she told me that was what boys did to get relief and try it. We kept swapping turns, I was breathing heavier and really turned on. I was growing bigger. My sister then said if I could make it to 6" she would have a surprise. I started pumping away, she stopped me, 5 3/4.
Closer she said and took her shorts off, her vagina had a bit of hair. "keep going she said" as I was starting to really pant, she made me stop again. there was little what I know now is precum. 6" she suddenly grabbed my cock and pumped fast and squeezed hard. suddenly I started cumming, all over the place, strings were just shooting out. Felt so good, my sister laughed. She was proud of me she said. Was our secret and never tell. I got my first hand job and it was the first cock she jerked to the end. Nothing ever happened again between us but that day I will never forget.