I was a nineteen year old sophomore in college, still living a home when my sister and her best friend decided on having a sleepover. I ogled these 18 year high school seniors in their nightclothes and it wasn't long before I had to retire to my room because my anatomy was betraying me.
As I lay on my bed with shorts and no shirt I again was thinking that the girls were hot looking and I had the starting of an erection. I ran my hand under the waistband of my shorts and felt the head of my now almost fully erect cock. I started to feel around the head and I closed my eyes enjoying the sensation, when my door flew open and I heard giggling. God was I embarrassed!
My sister was the first to speak, "Oh gosh I'm sorry, I didn't mean to barge in without knocking." I released my hard cock and removed my hand from inside my shorts but the bulge was as evident as ever and as I looked up I could see both my sister and her friend looking directly at my half exposed cock.
"I never expected to see your penis, and not hard like this", my sister was quivering and she could not seem to remove her eyes from where my dick lay up against my belly. Her friend Robin was also staring and as I looked up at her I noticed she had one hand stroking her left breast and the other between her legs.
For the first time since they both entered the room Robin spoke, "Can I touch it?" Looking at my sister I noticed her nodding her head and Robin was not talking to her. I said, "Sis are you OK?"
Without speaking my sister walked toward the bed reached out and pulled my shorts down and wrapped her hand around the base of my cock and started stroking lightly. She looked up at Robin and motioned her over to the bed.
"Go on Robin touch his balls." Robin sat on the other edge of the bed and reached her little hand out and lightly cupped my hanging sack. In the mean time my sister was stroking me faster; I reached up under her nightgown and laid my hand on her thigh. Unconsciously her legs spread and as I started to creep my hand closer to her pussy I could hear her breathing coming in rapid gasps.
I looked over at Robin and she was clearly consumed with the passion as she was clearly stroking her pussy now and squeezing my balls. My cock was at it's fullest erection and throbbing from the hot action between the three of us, but I knew that the thought of my sister stroking my cock was what was fueling the flame, although watching Robin fingering her hot snatch was adding that much more excitement to the situation.
I was drawn out of my revelry as I heard Robin tell my sister, "Suck his dick". I looked up at my sister and there was the glassy look in her eyes and I said, "Yeah, Sis come on suck this hard cock." As I said this I reached up and touched her pantied pussy. What I felt was a radiant heat I never felt from any girl before and because her panties were soaked through I knew my sister was hot. She whimpered lightly when I drug my finger along the lips of her sex and as I did her stroking of me progressed to a jacking and it was clear that she would do just about anything now that she was so excited.
My sister knelt on the edge of the bed and leaned over my stomach. I could feel her breath as she leaned closer to my throbbing dick. She looked up into my eyes and looked as if she was asking permission, and I nodded. She took the tip of my cock in her mouth and stuck the tip of her tongue in the hole. I looked over where Robin was sitting and she had a look of sheer bliss on her face, "This is so hot", she whispered.
I reached out my left hand and fondled her right nipple through her nightgown. Her nipple was hard and puckered and she moaned loudly and squeezed my balls. I realized at that time that my sister had taken more of my hard on between her lips and was jacking my cock where her lips would stop. I watched as her cheeks would draw in as she would withdraw from me. I thought to myself that this was not the first time she sucked cock and was a little sad that I was not her first. Yeah I know ego and stuff, but it did not take long before I felt that familiar tingle and knew that it would not be long before I would be shooting a load. A load I was reluctant to let slide down her throat.