Pass on Masturbating In Front Of Ginny.

“Pass.” I blushed and shook my head at my sister though I could not deny I was enjoying watching her tease herself as her hand in her panties rose at the leg holes giving me teasing peeks at her pussy. Her fingers moved rhythmically beneath the thin fabric as she teased her swollen lips and I could see the outline of her fingers pressing against her clit. The damp fabric clung to her pussy lips revealing more of her pink flesh with each movement and her fingers occasionally dipped lower giving me a glimpse of her glistening entrance.

“Spoil sport.” Ginny said as she pulled her fingers out from her panties and giggled. Her fingers emerged coated in her juices and a string of wetness stretched between her fingertips and her panties before breaking. The fabric of her underwear was visibly darker where she had been touching herself and I could see the outline of her puffy lips through the thin material. Her eyes locked on mine as she brought her fingers to her mouth and sucked them clean in one swift motion never breaking eye contact. The way she hollowed her cheeks and the small moan she let out made it clear she was putting on a show for my benefit and I couldn't look away no matter how much I knew I should.

“So was there anything else on the computer?” Ginny smiled as she rolled back over and looked at the lap top then at me. As she rolled onto her belly, her dress rode up exposing the full curve of her ass perfectly framed by lace panties that stretched across it. I felt my pulse quicken as my eyes traced the lines of her body. She smiled as she caught me looking at her ass before she pulled her dress down over her firm ass to cover it.

“A few dirty videos which is why she asked me to look at it but she deleted them.” I shrugged. Ginny's eyes widened with interest and she propped herself up on her elbows giving me a clearer view of her cleavage as the fabric of her dress gapped open slightly. Her lips parted and her tongue darted out to wet them as she processed what I had said and I couldn't help but imagine her in those videos writhing and moaning with pleasure with the two Milf’s.

“You check the recycle ben.” Ginny said as she used the mouse pad to close out the folder and then clicked it to see the recycle bin was empty. “Damn.” Ginny smirked. I was a little sad as well knowing I could not see them myself. There might have been something she missed I thought to myself and made a not to check it thoroughly before crashing the hard drive. The idea lingered in my mind longer than it should have because imagining what else might have been deleted only made me more curious about what racy secrets I might have seen.

“So you at least get a look before she deleted them?” Ginny smiled as she looked over at me as she propped herself up on her elbows causing her dress to gap open and giving me a clear view of her cleavage as she waited for my answer. I could still picture their naked bodies as the memory made my heart race. I debated how much detail to share with Ginny but it wasn’t like I could tell anyone else what I had seen.

“A bit when she went to get some bottled water.” I said with a shrug as I tried to hide my smile at what I had seen.

“Naughty boy.” Ginny smiled sly and reached over to give me a playful push though I was sure she would have taken a peek as well if she had the chance. “What were they doing?” She asked as she chewed her lip as smiled at me and let her fingers run over her chest just above her cleavage. My sisters teasing was doing little to ease the hard on in my pants.

“Different stuff. In one she was lying in the bed surrounded by flower petals waiting for her wife, in another she was massaging her wife’s back with her breasts.” I shrugged. The image of Helena full breasts sliding across her wife's back flashed vividly in my mind as they had looked into the camera.

“That sounds hot as hell.” Ginny smiled as she licked her lips. “Anything else?” She said as she sat up and looked at me and licked her lips slowly as her hands caressed her thighs. I could tell she was eager to play with herself again but wanted to hear more of my story.

“I managed to see her fucking her wife doggy style with a dildo from behind but she almost caught me.” I said with a smile. The memory of Mrs. Mona’s ass Mrs. Helena thrust the dildo deep into her wife made my pulse quicken and I shifted uncomfortably trying to hide my growing arousal as I thought about the video. I could still see every detail of that moment the way Mrs. Mona's back arched and how Mrs. Helena gripped her hips tightly as she thrust. I vividly recalled how Mrs. Mona's large breasts swayed with each thrust and her moans of pleasure filled the room as Mrs. Helena's slim fingers dug into her wife's soft flesh and she drove the dildo deeper and harder. My Cock ached as I thought about it.

“That would be so fucking hot. I can’t wait to take Mandy like that later.” Ginny giggled and licked her lips. I could only imagine what she would have done if she seen the videos. Mrs. Helena would have probably walked in on my sister rubbing her pussy to the home made lesbian porn. “Is the other woman sexy as well?” Ginny asked as she leaned in closer.

“I think so. She is a little thicker but still a lovely woman.” I smiled as I pictured Mrs. Mona’s body, her sports bra hugging her large breasts and yoga pants clinging to her full round ass. My mind filled with images of Mrs. Mona's curves bouncing and jiggling as she moved and I imagined running my hands over her soft flesh and I was envious of her wife. My cock twitched in my pants at the vivid mental image and I shifted uncomfortably in my seat. Ginny's eyes seemed to notice every subtle movement and her smile widened knowingly.

“I can not wait to meet them.” Ginny giggled and wet her lips playfully. “Oh, while I have you Mandy wanted to know if I could borrow our penis to do one of those dildo mold things.” Ginny reached over and cupped my crotch making me jump. Her fingers squeezed gently and I felt my cock throbbing under my sisters teasing touch. My breath caught in my throat as her warm palm pressed against my growing bulge and her slender fingers traced the outline of my shaft through the fabric. My cock stiffened instantly against her palm and I could feel the heat of her hand through my jeans. Her fingers traced the length of my shaft and I felt my balls tighten in response to her touch.

“I think not.” My cheeks grow warm at the thought of Ginny having sex with Mandy with a strap on made my cock ache in my pants. My imagination ran wild with vivid images of Ginny and Mandy entwined their bodies moving in perfect synchronization as Ginny thrust into her girlfriend with a copy of my cock.

“Why not? Alice seems to love it and I can see why.” Ginny teased as she ran her hand playfully along the bulge in my pants. Her fingers traced the rigid outline of my cock squeezing and stroking through the fabric and my shaft pulsed urgently in response. Pre-cum continued to leak from my tip leaving a larger damp spot on my underwear and Ginny's palm pressed firmly against my aching length.

“You are not fucking your girl friend with a replica of my cock.” I said as I pulled her hand away and smirked as I tried to hide my smile. My cock ached at the loss of her touch and I could feel it straining against the confines of my underwear **** for more stimulation. I could feel my heartbeat pulsing through my shaft and I resisted the urge to adjust myself in front of Ginny and let her know how badly she had gotten to me. My throbbing member begged for attention yet I **** myself to remain still and composed.

“Fine, can’t blame a girl for trying.” Ginny shrugged and leaned over and whisper in my ear. “But when me and decided to have kids I expect you to give her real thing and impregnate Mandy for me.” My sister's breath was warm against my skin and her soft lips brushed lightly against the curve of my ear as her voice dripped with temptation that made my cock twitch painfully in response. My chest tightened as heat surged through me and I imagined Mandy's soft thighs spreading wide beneath me while her body trembled from every thrust and Ginny whispered filthy encouragement into my ear.

“Ginny.” My jaw dropped at the thought and I looked over at her in surprise. I couldn't believe she was suggesting this and my mind reeled with the possibilities of actually fucking her girlfriend. The idea of cumming inside Mandy and breeding her for my sister made my cock throb painfully and I had to bite my lip to stifle a groan.

“Don’t tell me you wouldn’t do it little bro. I saw the way you were looking at her in the bathroom this morning when you walked in on us.” Ginny leaned in and gave me a playful kiss on the lips. The memory of Mandy naked in the shower flashed through my mind and my cock strained against my pants at the thought. The taboo nature of the situation only served to heighten my arousal and make my cock strain even harder against my pants.

“You be fine with me fucking your girlfriend?” I gave her a look as I raised an eyebrow. My voice came out rough with arousal and I couldn't hide the hunger in my eyes as I stared at Ginny.

“As long as I get to watch.” Ginny smiled wickedly and gave me a little wink as she slid off the bed then smoothed down her dress over her ass. I imagined Mandy's tight pussy wrapped around my cock and Ginny's eyes burning into us as she watched every thrust. My eyes roamed over Ginny's body imagining her naked and touching herself while I fucked Mandy. The image of Ginny pleasuring herself while watching us was almost too much to handle and I felt a bead of pre-cum leak from my aching shaft. Her wicked smile and knowing look told me she was fully aware of the effect she was having on me.

“I am sure Alice would be fine with it. Me and her can just watch unless she is into the whole swingers thing. If so me and her can swap.” Ginny licked her lips teasingly and smiled. Given what happened last night between me, Alice, and Brit, Alice might take it up to a foursome I thought to myself. My cock throbbed painfully as I pictured all four of us naked and tangled together in a sweaty passionate mess.

"You are so bad." I shook my head at my sister as she walked toward the door. I shifted again trying to ease the ache in my groin but knowing I'd be jerking off the moment she left thinking about fucking her girlfriend. I watched her ass move under her dress and her hips sway as she walked away and my hand unconsciously moved to my crotch to adjust my throbbing erection.

“Yeah but you still love me.” Ginny looked back and gave me a playful wink. I realized how true her words were and how badly I wanted to act on every filthy suggestion she'd made even if I didn’t have the courage to act on them.

“You need a spanking.” I shook my head at her.

“I will be sure to let Mandy know.” She replied and closed the door. The click of the latch echoed in the sudden silence and I fell back onto the bed with a groan as I rubbed my cock through my pants as I thought about Ginny’s words.