I woke up early in the morning, feeling my morning wood. This was quite normal, and I reached underneath me to wrap my fingers around the shaft. I wasn't awake enough to seriously masturbate, just a sleepy, slow, enjoyable squeeze.
I rolled a little onto my side so that my prick wasn't pushing into the mattress. I could now stroke it easier, and as time went on my stroking started increasing. What I didn't know was that my sister was standing in the doorway watching me.
She watched as I squeezed the base of my penis, then slowly let my fingers push up toward the head. I moaned, pushing my hips forward, and rolled onto my back.
My erection was now sticking straight up into the air, and I was wide awake. My eyes hadn't yet opened, but my hand started stroking my dick from base to tip. I grabbed the base with my hand and wiggled it from side to side, slapping both of my legs with my dick, while I had some particularly nasty thoughts about the sexiest female in the bar last night. Moaning again, I pictured her hand, not mine, attacking my woodie.
My knees bent as my legs raised up and spread. My non-pumping hand reached between then and grabbed my balls, pulling them down gently. This gave my sister a perfect view from my door, and her eyes were bugging out.
My fingers squeezed my cock head, pre-cum covering it. I smeared the fluid over the head and down the shaft, and my hand started flying up and down the wet shaft. My hips started moving and I started moaning, quietly, so nobody in the house would hear me. I still didn't know my sister was in my doorway.
The sexy vision in my head was naked and attacking me, and my hand was helping to bring about my orgasm quickly. I reached one hand over towards my night table to grab a tissue, but before I could find it my cum started up my shaft and spurted out high into the air. It was on about the third spurt that I realized I had heard an unusual noise. Probably a couple more spurts shot out before I managed to force my eyes open and look towards the noise. I was shocked to see my sister standing there. Her eyes were fixed on my cock, and I'm not sure if her eyes or her mouth were open wider. She was totally stunned.
As my cum finished oozing out, I yelled - well, whispered loudly - "What are you doing?"
Jamie's eyes shot up to look at mine, surprised that I knew she was there. Her eyes went back to my dick, then back and forth from there to my eyes a couple of times before she turned and ran into her room, closing her door.
I was also in shock, but the most important thing was to clean up my mess. My orgasm had happened so quickly it had shot out all over me. I would have to deal with Jamie later.
I had recently moved back home. It was just temporary. I had to move out of my apartment. I had a new one but couldn't move in for three months. I thought it was easier - and cheaper - to move back in with my parents instead of bunking with a friend, even if I was 22 years old. I had a lot more room, too. But I had to remember to think about some of my habits, like sleeping in the nude and leaving my door open.
My sister had graduated from high school, but hadn't yet decided what direction her life was going to take. I thought she was trying to wait and marry some rich dude so she wouldn't have to work, ever. She denied that, but I hadn't yet seen any signs that she was looking for work. She was nearing her 19th birthday and had never had a job yet.
She certainly had the body to snare a rich dude. 5 feet 6 iinches tall, brunette hair worn very long, a thin body with shapely hips and above average boobs. She was very good looking, and a very pleasant personality and smile that she had only because she never had any responsibilities. Well, that's from a big brother's perspective, anyway.
Jamie avoided me most of the day, but that afternoon I walked past her open door and saw her there. I decided to confront her.
"Hey, Jamie. Have a minute?"
"Uh, okay." she replied, tentatively.
"I was wondering why you were spying on me this morning," I said, sitting down beside her on her bed.
"Spying on you?" she nearly screamed. "I wasn't spying. I was just walking past."
"And decided to stop and watch."
"Well, yeah. It surprised me."
"How long were you watching?" I asked.
"Ahhh, before you rolled onto your back."
"What?" I was surprised. "You watched me the whole time?"
"I don't know. A while," she answered. "Why were you doing that anyhow?"
"Doing what?" I was defensive now. "I couldn't help it, I just woke up that way. It's normal. There's nothing wrong with it."
"Does everybody do that?" she asked.
"Yeah, I imagine. If you mean guys."
"Of course I mean guys. Girls don't do that!"
"Girls don't masturbate?" I asked. "Or girls don't wake up with an erection?"
Jamie blushed at the use of my language. Or at the whole conversation. "Do you do that every day?" she asked shyly.
"No," I answered. "sometimes in the morning, sometimes later in the day." I paused while she seemed to be thinking about that. "Sometimes more than once."
That got her attention and her eyes ahot back up to meet mine. "More than once?"
I nodded.
"In one day?" She seemed surprised.
I nodded again.
After a minute of thinking, she looked at me and asked, "You mean you could do it again? Like now?"
"Now?" I asked. "Yeah, I guess. I mean sure."
She looked for a minute more, then said, "Show me."
I didn't understand what she meant. "How can I do that? You'll have to take my word for it."
She hesitated again. It seemed she was having trouble talking for a change.
"Not if you do it here," she said so quietly I almost didn't hear her.