It was now Sunday. I got out of bed, excited for the day to come. I got dressed and went downstairs. I decided to make breakfast again. While cooking up some eggs, I heard my Mom coming down the stairs. I looked over towards her and started to smile when I saw what she was wearing. A white baggy t-shirt and nothing else. I could see the silhouette of her nipples through the thin fabric but she didn't care at all. At least that confirms that this is the alternate world. "Good morning Mom." I said before walking over and giving her a big hug, feeling her tits press into me. My Mom recoiled a little, not expecting a hug so early. "Aww a morning hug, how kind. Now who are you and what have you done with my real son hehe." She said teasingly, before pulling back and moving to the kitchen, to stop my eggs from burning. "You sit down son, I'll serve these up for us in a second."
Me and my Mom sat down at the table with a plate of food. I was grinning all trough the meal. "Well someone's in a good mood aren't they." Mom said, really glad to see me in better spirits since the other day. "I am Mom, I just feel really excited for the day to come." My mother got a wide smile across her face "Oh I'm so happy to hear that, I really hope you enjoy it." She stood up and walked around to me, and kissed me on the head. "Let me clean up, you enjoy yourself today dear." She said, as she took both our plates and started to clean up.
I had a few plans of what to try today, but I would wait till later to do it. For now I just watched as my Mom stood over the the sink. The bottom of her butt was showing under the shirt, and I don't think I would've been able to look away even if I tried. Staring at my mothers beautiful naked butt, started to make the blood flow to my cock. I could do the thing I wanted to try now, but before I was able to work up the courage, the front door opened.
Tracy my twin sister walks in, a bag over her shoulder. Her brown hair was tied into a pony tail. She was wearing a loose pink blouse, that exposed a lot of her perky chest, and a pair of denim shorts. I never really looked at my sister sexually until now, but she was really cute. She looked a bit like a younger version of my mother, but with a smaller chest (About a B-Cup), a smaller ass and a skinnier waste. "Heyyyy I'm home" She yells as my Mom puts down the dishes and went to hug her. "Oh baby I'm so glad your home." She pulled her in and I saw my sisters face going close to my mothers tits. I got a brief sting of jealously but it faded quickly as I decided to enjoy the sight of my sister nearly motor boating our Mom. "Oh dear how was it, did you have fun." "Oh Mom it was great, I'll tell you all about it over dinner, oh hey Justin, did you clean my room for me." She smiled knowing I would've had to do it for her. "Yeah I did sis, but I'm not doing it again next week" I said before going up to her and hugging her. We teased each other a lot but it was all just for fun, we did like each other enough. "Surrrre you wont, hope you enjoyed the room for yourself while you could haha."
"Hehe well if you two are done teasing each other, how about you both go and put away your stuff. And yes Justin, you do need to help you sister." My Mom said, before kissing me on the head again and going back to the dishes. "Okay Mom" We both said in unison before going up the stairs towards our room. We get to our room and she immediately jumps onto her bed. "Oh god you've had no clue how much I've missed this." I laughed at my sister before grabbing her bag and throwing it onto her with a big thud. "I cleaned your room for you so you can put your stuff away, okay?" She rolled her eyes in a exaggerated ways and started taking out her stuff.
I was just going to sit back and let her pack her stuff then go downstairs together, but then she grabbed my attention by pulling out a pair of pink panties. I didn't think my sister would own anything like that. A pink pair with lace in the front and only a single string in the back. Seeing them, and with the images of my mothers ass still fresh in my mind, caused my cock to grow. Tracy paid him no mind and put away the rest of her clothes, but left the panties on the bed. If I thought the panties were surprising, I definitely wasn't ready for the nine inch dildo she pulled out the bottom of her bag. My jaw dropped a little as she casually put it in her bed side locker. "I didn't think you owned one of those?" I said to her, but was met only by a confused look. "What do you mean, you've seen that before right?" For a second I forgot how open people were here, I didn't think they would be open this much, but guess I was wrong. "Right, sorry, just a bit tired today." She shrugged and put the rest of her stuff away.
"Okay, I think I'm going to have a shower. See you in a bit bro." She left the room with a smile, but before the door closed I saw her lifting up her shirt, stripping in the hall. I was thorn on what to do, but there was something I always wanted to try, and I saw the perfect opportunity. The other stuff I wanted to try could wait. I lied down on my sisters bed and pulled down my shorts. I took that pink thong in my hands and wrapped it around my cock. Feeling the soft fabric of my sisters panties made my heart race. I began to stroke my hard cock using them. Before my pre cum started to leak out, I pulled out the panties and held them to my face, taking in a deep breath. My sisters aroma made roll my eyes back and my dick to leak precum over my hands. I pictured my sisters chest, the cleavage she showed in her low cut blouse. I'd love to see her cute tits and play with them as I cum in her panties.
I continued jerking off for a few more minutes, until I heard the shower turn off, and foot steps coming towards me. My first instinct was to hide my dick and act normal, but then I remember what this world was like, and that this was a good opportunity to see how far I could go. Tracy opened the door, wearing nothing but a towel wrapped around her chest. She looked at me with a expression of genuine surprised. Then began to giggle a little. "God bro, I can't leave you for 10 minutes without you dirtying up my panties. Just make sure to put them in the wash when your done." She walked to the side of the bed, beside her horny brother that was jerking off. I stared at her body and let out a slight moan when her towel dropped to the floor.
Her cute little butt was dripping wet from the shower. I stared as she took her towel and started rubbing it along her body, tenderly drying her breasts and making the nipples hard as a result. Her clean shaven pussy looking tight and delicious, I had to resist the urge to get out of bed and take here there and then. I continued to stroke myself, staring at my smiling sister, who was still giddy after seeing me use her panties. I felt myself getting close to cumming everywhere. The sight of my sexy twin edging me forward. She glanced down at my dick and smiled. "Hehe, such a horny boy, hurry up and follow me down stairs." She leaned over and kissed me. Not on the cheek or head, right on the lips this time. This act made me arch my back and shoot my load into her thong, all while letting out a desperate moan.
"Oh wow, that sure is a lot of cum bro." She said, going a little red in the face at the sight of her stained pants. "Ha, sorry Tracy, got a little excited." I said, breathing heavily from the wank. My still naked sister leaned forward and pulled the panties off my dick. "I'll put these in the wash, meet you down stairs." She threw the panties in the wash bag and went for the door. Before opening it she looked at her hand a saw a little stain of cum on her finger. Without thinking she put it in her mouth and licked it clean. She then left into the hallway, fully nude.
My brain was still high from the ecstasy of cumming. But this confirmed what I thought, my family wouldn't care if I jerked off in front of them, Even at this stage I should be able to cum when ever something sexy happens. This meant I had so many more opportunities available to me, and I couldn't wait to try them all.