My Sister Calls Me "Girthy"

by LadynStFreknBed©

My sister's favorite game is unique. While most girls like board or even video games, my sister's favorite is to see if she can give me an erection.

You see, we grew up in a family where nudity was seen as quite natural. My parents were practically nudists inside the house. It was quite common for one family member to use the toilet while another was taking a shower. It wasn't a big deal, really.

My sister, Samantha, is a year older than I am. Her game started when she came home from college for summer break. One evening, she walked into the bathroom just as I was stepping out of the shower. She stood there and stared at my cock. Under her stare, my cock sprung to life. She grinned as I grabbed a towel to cover myself.

The next few days, she would stare at my cock any chance she got. When my body responded to her glare, she would laugh and walk away. She just loved the fact that she could embarrass me. She toyed with me at will, apparently practicing her ability to generate erections.

She grew tired of that method and took a more active approach. She began to tease me in various ways. If I was in the bathroom, she would come into the room wearing only a towel. She would flash me striptease-style, showing her breasts or giving me a peek between her legs. Whenever she got a good look at my naked cock, she referred to me as "Girthy."

Samantha has rather large breasts. She always seems to have them on display for me whenever she found me naked. She relished the power of showing me her erect nipples protruding through a thin t-shirt or pajamas. She must have thought this was great fun.

She was never too obvious about her little game in front of our parents. If our parents were not home, she would walk around the house naked. She knew it was a fast and easy way to make me hard.

I believe my sister was quite intrigued by the fact that she can cause erections. No doubt, she was testing her ability to do so on me. I was never safe from her exercising her power over my cock. She seemed to be completely fascinated by her game. Little did she know that I enjoyed it too.

One night, Samantha invited one of her old high school friends to sleep over at our house. I decided to hide out in my room. I would not want my sister to embarrass me in front of her friend, Amber. Amber was the only friend of my sister's that I ever really talked to. She was sweet, with pouty lips and the kind of face that was adorably expressive. Her thick, long brown hair and bouncy, little figure made me wish we were more than just friends.

I spent countless nights stroking my manhood to visions of Amber. I then decided to get under my covers. I began to slide my fingers up and down my cock while imagining what Amber looked like in a sexy little bra and matching panties. I imagined that I had the privilege of kissing and caressing her breasts as I removed her bra. I thought about how incredible it would be to slip a hand into her panties and feel her moist pussy. I wondered if she would be loud if I rubbed her clit and watched her squirm.

As I was entertaining myself with Amber in my mind, my sister barged into my room, with Amber bounding behind her. I whipped my hand away from my cock and tried to act natural.

"Are you ready for bed already, Girthy?" my sister asked.

I couldn't believe she called me "Girthy" in front of Amber! How embarrassing!

"Ooohh... I know what you were doing," my sister cooed. She cocked her head and looked at my blankets as if she was trying to see through them. Amber giggled.

I must have turned three shades of red. My sister's expression changed. She looked almost angry.

"Who were you thinking about as you stroked your cock, Lil' Brother?" she demanded.

"Get out of my room!" I said as I rolled over to face away from her glare.

Within seconds, she had a firm grip on my blankets and was yanking them off of me. I tried to grab them, but it had taken me by surprise. My delayed reaction left me exposed to my sister and her friend. I hurriedly tried to cover myself while reaching for the blankets.

"Knock it off, Sam!" I yelled. "Give me the blankets!"

"Not until you tell me who you were thinking about," she demanded.

"I wasn't doing anything!" I lied.

"Ok, ok... but tell me," she said as she walked over to Amber, "Do you ever think about Amber when you jerk off?"

"Samantha!" Amber protested.

I couldn't help notice that Amber had been looking at my groin. Maybe it wouldn't be so bad if she knew how I felt about her. I took a deep breath, as if trying to inhale courage.

I lowered my gaze to the floor. "Yes," I admitted softly.

Amber took a step back. God, I hope she isn't thinking I'm some sort of pervert. Girls know we think about them, don't they?

"Hmmm... I have an idea," Sam proposed.

"An evil one no doubt," I replied.

Amber laughed, which made me smile. Sam whispered something into Amber's ear. What is she planning now? Amber nodded in agreement to Sam.

"Remember, don't say a word," Sam reminded Amber.

"I wouldn't," Amber agreed.

"Ok, Lil' Brother, Amber and I want to play."

"What? You're crazy! What if Mom and Dad hear us?" I protested.

"They just left for Aunt Karen's house. They'll be gone for hours," my sister reported.

Sam walked over to my bed and removed the hand protecting my cock. I stared at Amber, who had not moved. My sister lowered her head to my cock. I felt her tongue touch the head. I flinched, but continued to stare at Amber. I wanted Amber to touch me.

I felt my sister's mouth enclose over my cock. Mmmm... I couldn't deny that it felt so good. With new found courage, I reached my hand out to Amber. She stepped forward and took my hand. I gently pulled her toward me. Her lips met mine for our first kiss.

Sam was slowly sucking my cock. She increased her speed, vigorously sucking my shaft which was glistening with her saliva. I felt it throb and jerk into its thick hardness. Amber and I kissed deeper, muffling the moans my sister was invoking from me. I reached up to Amber's blouse and unbuttoned it completely.

Her full breasts were barely contained by her pink lace bra. I ran my fingers across her breasts along the top of it. I was thoroughly enjoying my sister's mouth as I watched Amber unhook and remove her bra.

My sister removed her mouth from my cock. Amber started to fully undress, but Sam got up from the bed and approached her friend. My sister stood behind Amber and opened the zipper to Amber's short skirt. My sister slid her hands along Amber's waist and lowered her skirt to the floor.

Sam had her arms wrapped around Amber. She slid her hands up Amber's stomach to her breasts and cupped them, massaging them gently. Amber let out a little moan and leaned back against Sam, who then grabbed the sides of Amber's white lace panties and removed them. She took Amber's hand and led her back to me.

I laid back on my bed. Amber straddled my hips and lowered herself onto my cock. The warm wetness was better than I ever could have imagined. She rocked her hips and was grinding her pussy further onto my cock. I was watching Amber's breasts bounce as my sister kissed my chest. Sam stripped her clothes off and stood watching us.

"You enjoying this, Girthy?" my sister whispered.

"Ooh, yes," I moaned.

I didn't know how much longer I could hold off on cumming. I wanted this moment to last forever. My sister sat on my bed facing me. She leaned back and spread her legs so that I had a clear view into her hairless mound. She slid a finger along her sweet lips.

"Would you like to touch me?" she asked me.

I reached over to her, running my finger along her sexy ridges. My finger found her clit. She threw her head back and moaned as I applied gentle pressure to her button.

Amber responded to Sam's arousal. She bucked her hips wildly as if she couldn't get enough of my cock. I rubbed my sister's clit to match Amber's wild passion. Our moans filled my bedroom.

Amber's moans became high-pitched as I felt her clamp down on my cock. I couldn't take it anymore! I grabbed Amber's arms and thrust my hips up into her as I came. The sight of her straddling me was one I would never forget.

I resumed rubbing Sam's clit. Amber kneeled next to Sam and sucked on her nipples. Sam moaned and clutched Amber's arm as she trembled. Breathless, the three of us collapsed on my bed. I took Amber into my arms and kissed her gently. We've been going out ever since.