She barged into my room without knocking, her face showing signs of extreme anxiousness. Shannon was trembling, "I am so nervous, I am going to die."
I was in bed in my underwear under the blanket, reading a story, luckily, still awake. Well, maybe not so lucky because it was an incest story on Literotica, and my pecker was pushing the covers up.
I turned my computer off, put it on the nearby dresser, and stared at her, "What the hell is wrong with you?"
"Tomorrow I have the most important exam in biology. If I do not get at least a B+, my overall score won't be high enough..."
"Relax, everything will be OK. You are a good student, and I watched you study long hours for days now. I am sure you'll do very well."
She was standing in my room, covered by a thin robe, and shaking like a leaf in the wind. She cried, "You don't understand, I have bad feeling about this test!"
"Sis, you are hysterical. Take a deep breath, and try to sleep."
"I can't. I tried. Remember 4 years ago, when the storm hit and we were alone in the house? You hugged me and let me sleep with you. Please, do it for me one more time. I promise never to ask you again, but I am really desperate..."
I was torn. My erection demanded relief, but my little sister needed me, and there was nobody else but us.
"Shannon, back then you were 15 years old... OK, common in, but no talking with your friends on the phone. I want quiet in my room."
I saw a little smile. She lifted the covers, slid in, and stayed on the other side. I grabbed my computer, and turned it on again. She watched me and begged, "Please, Matt, leave your stuff and spoon with me. Your bed is nice and warm but I am still shivering."
I was confused. I wanted to help her, yet having my raging prick between us was not the welcome she needed or wanted...
She pleaded with me, "PLEASE! I don't know why you stopped liking me 2 years ago, but I need you tonight."
I mumbled, "Shannon, it's not you. It's me."
"I don't know what you are trying to say, and I don't care. Just hug me." She turned her back to me and moved in my direction until her back touched my chest. In the last seconds, I remembered to push my pelvis back and our lower bodies remained separated.
"Matt, not like that. I want you to hug my tummy and stay closer to me."
Her young soft body against my chest and the smell of her floral shampoo were the last thing I needed to help relieve my engorged penis.
I whispered, "Sis, give me a minute."
She turned, faced me, and all of a sudden, raised the blanket and stared at my groin. The bulge was unmistakable. She smiled, "That's OK. I don't care. I want you to spoon with me until I fall asleep. When I dosed off, you can take care of it any way you want."
She showed me her back side, and I hugged her, feeling my erect rod nesting in her crack.
Her shaking diminished but was still noticeable. Her hands clutched to mine on her abdomen and her small body jiggled slowly, like a toddler trying to fall asleep.
My unruly cock felt the constant friction and refused to go down. In fact, it extended further. There was no way Shannon wouldn't feel my hardening pole poking her ass...
A short time later, Shannon turned again to face me, "Matt, I like your soft bed and your warm body, but your stiffy seems to be a problem for both of us. If I don't sleep, I'll be crabby all day tomorrow, and fail my test."
"Girl, I cannot take care of it when you are in my bed."
"Can you do it in the bathroom?"
"It's not so easy to climax knowing you know what I do and waiting for me here..."
She started crying, "The one time I need you, you can't help me."
"Not exactly. If you stay on the other side of the bed my erection will subside eventually."
"But I want your warm body to feel safe..."
"Shannon, I don't know..." She stopped me and muttered with her face turned away, "Do you want me to give you a hand job?..."
"Shannon, what the fuck?! You are my little sister for fuck's sake!"
She chuckled into the blanket, "So what? I'll turn my face away and won't look."
"Is spooning with me that critical?"
"Matt, you know I'd never dream of suggesting it if I wasn't sure."
"If I let you do it, you better never mention it to our parents or I'll kill you!"