I had just lit another fart off when I heard my sister Leah came into the bathroom, “What the hell are you doing, weirdo?!” she screeched.

I was having too much fun to be mad at her for calling me weirdo. Instead I lit the fireplace lighter I was holding and ripped out another fart as I sat in the bath water. Brrrrrrrr–blorp–FOOM!! as it made a satisfying fireball. I laughed and she started laughing hysterically too. She laughed and laughed, for about five minutes straight, holding her sides, before she could finally speak, “That… was… fucking… HILARIOUS!” She continued to laugh, “Do it again!”

By then I had built up another good sized fart. I let it rip to repeat the act, Brrrrrrrr–blorp–FOOM!!

She convulsed with another fit of laughter. I was amazed she’d be so entertained by something I knew was wholeheartedly boyish and crude.

After she calmed down again she said, “I want to try.”

I handed her the lighter, thinking she would just sit on the toilet and fart through her jeans. Instead she stripped. First her jeans, then her panties, then her shirt, quickly, like she was in a hurry. She was almost 15, and she had a nice butt, a good fur patch between her legs, and to me her tits seemed big. I hadn’t seen her naked since she was 11 – skinny and shapeless as I was now, so from my 12-year-old perspective she was a woman. I knew she was going to sit in the tub in front of me, so I just scooted back as far as I could to make room for her and she got in.

She sat holding the lighter and waited. And waited. “I can’t fart!” she cried dejectedly.

She waited some more before giving up and handed me the lighter saying, “Do another one.”

“No, it’ll burn you,” I declined, knowing from experience not to be so close. She turned herself around in the water, allowing me another glimpse of her crotch before sitting back down, facing me with her back not quite being impaled by the tap sticking out of the wall.

“Is that better?” she asked.

“I think so,” I answered, but not for the reason she was asking. She was now facing me, letting me see her full, round tits, not five feet from my face. I had not seen a bare tit since I saw a woman nursing her baby in a laundromat last year.

I made faces as I waited, pretending to conjure up a fart, really just staring at Leah’s tits. Finally I lit the lighter and was rewarded with the biggest fart I had yet, Brrrrrrrrrrr–blorrp–FOOOOM!!

We started laughing all over again.

Mom heard us and came in to ask in that stern Mother voice, “What is going on in here?!”

My sister said, “Show her! Show her!”

But Mom had seen it months ago, so I just held up the lighter. She made a face and waved a disgusted hand at us as she quickly turned away, not even saying anything about her 14-year-old daughter being in the bathtub with her 12-year-old son. As he lit his farts off for their mutual entertainment.

“I got one!” she cried, and I quickly handed her the lighter. She made a face like she was pumping out a huge turd and lit the lighter… Brrt–blup–POP!

“Yyeaahh!” I cried, “You did it!” I put my hands up for a high-ten, and I got most of one as she still held the lighter. I quickly got to my knees and reached my arms out to her for a hug, and much to my delight she accepted, pressing her naked tits into me as we embraced.

We sat back down and smiled at each other then, still laughing occasionally. Even though I had been staring at her tits for a good ten minutes now, I still hadn’t really gotten a boner, but I felt one now and I started getting nervous.

Leah noticed this and asked, not quite accusingly, “What are you looking at?”

Since I actually hadn’t been looking at her tits at the moment, I truthfully answered, “Your makeup got a little messed up.”

“Oh,” was all she said.

By unspoken consent, our bath was over and we got up together as Leah hit the lever to drain the tub. Since I was closer to the shelf with the towels, I handed one to her and got one for myself. We dried off and got out of the tub, as I hung up my towel and got my robe I noticed my sister wiping at her makeup with a tissue. I just left and went to my room, but then I heard her behind me so I left the door open for her.

I hung up my robe and was going to start getting dressed when she said, “Don’t get dressed yet, Del,” just as I noticed she didn’t bring her clothes with her. She was sitting on my bed, not even trying to cover herself.

“Why not?” I asked.

I saw her turn a little red, “Just ’cause.”

I turned to her, feeling my dick start to stir, knowing I was probably starting to redden myself, “’Cause why?”

“Can I look at you?” she asked, her voice higher and quieter.

“Why? You’ve seen me lots of times.”

“I mean up close? You can look at me,” she offered.

Wow. Looking at a naked woman up close. But I was still nervous, “Okay, I guess.”

She stood, “Here, lie down.”

I laid down on my bed, knowing I should spread my legs a little so she could ‘look’. A couple years ago I had done this with Lenna, a girl my age.

Leah’s face was between my legs, looking at my dick. I SO wanted to fart in her face, but I knew I would ruin everything if I did, so I held it in. I tilted my head up to watch her, she was examining my dick closely, and I was scared something was going to happen, like she’d grab it, or Mom would catch us, that it was totally limp by then.

Finally she asked, “Can I touch it?”

“Um, maybe you better not. In case Mom comes or something.”

Her head shot up and her eyes opened wide, like she hadn’t even considered that. She slowly got up and left my room. I was disappointed that she cheated me, but I wasn’t going to say anything. But then she came back with her clothes and dumped them on the floor. “Mom’s outside,” was all she said.

She could see how nervous I was. “Okay, you can look at me now.”

We traded places, and she laid down just as I had, with  her legs parted and her arms at her sides. Before I looked down there though, I wanted to see her tits up close. I had never seen tits up close before. Mom’s didn’t count and I was too young to remember anyway.

I saw her nipples getting harder as I watched, I couldn’t tell if my sister was nervous or excited. Probably both. Then she quietly said, “You can touch. If you want.”

I was scared as hell of getting caught, but if Mom as outside I knew I had enough time. I slowly put my hand on my sister’s tit, palm right over the hard nipple. I gently squeezed, then rubbed my hand around on it, before crossing over to the other one.

Then I remembered Leah down in between my legs, and I quickly walked around to the end of the bed to look down there. I got up real close, my face merely inches from only the second pussy I had seen up close. Leah’s pussy was a woman’s pussy though, not the hairless slit of a child.

“Could you open it up?” I asked, half afraid she’d get mad, but instead her hands quietly moved over her thighs to her crotch, and she spread her lips wide for me. I was looking in a real vagina. Cool! I though about Mom giving birth to us, wondering how a baby could come out of there. I slowly put my finger in the hole, feeling wet. I had just assumed it was from the bath water, not knowing anything of female wetness.

Leah let out a sigh then, but I didn’t stop since she didn’t sound mad.

Just then we both heard Mom downstairs. I ran to Leah’s clothes and threw them to her, then quickly got dressed. Then as Leah was finishing, I saw something wrong and started pulling her shirt off, “It’s on backwards!” I whispered urgently, and we both started giggling as Leah and I tugged her shirt off and then got it on her properly. But all the hurry wasn’t necessary as Mom remained downstairs.

We stood facing each other, a little winded, a little giggly, a little nervous and guilty about what we’d done. Then we hugged, again I felt her tits pressed against me, though this time through our shirts, and I gave my sister a smooch on the cheek.