So, something I should mention about Lacey. Even before the incident on the shower, I had been aware of one particular advantage to her. She always did what I asked. I was never sure why. It might have been because my parents always told her to listen to adults, and in her eyes I counted. I'm pretty sure that when she used to sneak into my room to sleep at night, the only reason she waited until I was asleep was so that I wouldn't tell her to leave.

Of course, only having seen her as an annoying kid sister before, the stuff I asked for was pretty mundane. Go fetch me some water. Switch to a less stupid show. Go up to your room, and don't come out until my girlfriend leaves. Normal stuff really. Of course, things got a lot less normal after that Saturday. Sunday morning had me waking up to a usual situation for me. Bad case of morning wood, and Lacey, likely having woken up and snuck in to my bed, asleep next to me. The difference was my reaction to it. Before, I would have been pissed, as it would mean another dry morning. Now though...

I removed the cover and looked down at Lacey. I still found it hard to believe how hot she looked. Her pajamas had scrunched up a bit in her sleeo revealing her belly, and despite seeing her naked the day before, the sight was still an amazing turn on. I wrapped my arms around Lacey, and pulled her to me. I started to rub my clothed erection against her. Lacey let out a soft moan as she slowly opened her eyes. Then I heard the most diappointing words in my entire life.

"Kids, we're home!"

Fuck. I let go of her and bolted from my bed. I heard the house door close and my parents chatting downstairs. Bolting to the restroom as quick as I could I thought about what might happen. My erection was most definitely gone. Nothing ends boners like thinking your parents are going to justifiably kill you. I took a quick piss and left. My parents were still downstairs, tearing apart the kitchen in search of food. I saw Lacey walk out of my stretching her arms over her head. The sight nearly beat out the fear for dominance in the war that was my boner. Not really thinking I grab Lacey and faced pushed her into my room.

"Don't tell them," I said in a hurried whisper.

"Okay," was all she said.

Then she went downstairs and talked to my mom about their trip. A conversation that was so completely normal I almost thought it was suspicious. My parents owned some out of state franchises that kept them constantly traveling. As a result they were constantly heading out of town on business. This used to mean being stuck babysitting Lacey. Now it meant getting to babysit Lacey. Would my parents be able to tell what I had done? Where was this all heading?

To eating at a brunch buffet apparently. An old family tradition. We could say it's because we're celebrating our parents coming home, but it was actually because none of us could be bothered to cook. The rest of the day was perfectly normal. Other than the constant worry that I had forgotten something and my parents were about to realize that their son had performed horrible acts upon his little sister. Spoiler alert, they didn't.

Later that night as I was heading to my room, I passed Lacey stepping out of the bathroom. She had just taken a shower and was wearing another of my old t-shirts. I plain white one this time. I suddenly remembered how Lacey didn't tell anyone. My mind then went back to all those times she did exactly what I told her to. Knowing my parents were downstairs getting drunk, I decided to test how far this went.

"Stop," I said. Simple thing really. I said it, and she did it.

"Come here," I commanded, she obeyed. I began to eye her weirdy. Causing her to look at me confused.

"Why didn't you tell mom and dad?" I asked her.

"Because you told me not to." Simple response, amost like the "It just is" we use for kids to get them to stop asking stuff. Not wanting to push the matter I decided I wanted to see what else she knew, and what else she would do.

"Did you ever touch yourself before?" Was the first thing I wanted to know.

"What?" was her response. Okay, that kind of freaked me out a bit. I figured she knew this stuff.

"Have you ever touched yourself here, the way I did?" I asked, as I softly stroked her pussy from the front.

"No." Well, that answered that.

"Was yesterday the first time you watched me shower?"

"No."

"Have you watched me do this before yesterday?" I reached into my pants and stroked my penis a bit.

"Yes."

"Have you ever seen me have sex?"

"No."

Well then, I still had some stuff to show her then. Of course, by now my boner was hard as diamond and demanded satisfaction. Which also meant, that of course my parents decided to drunkenly make their way up the stairs. I ran to my room as Lacey went silently back to hers. The night was spent jacking off feverishly and dreaming of the next time my parents were out of town.

The next few days were pretty uneventful. Lacey had to wake up early to catch the bus, and didn't sneak into my room those nights. I was busy with job interviews, and the rents were just busy. A few times, when we were alone upstairs, I would stop Lacey in the hall and have a quick make out session, or grope. We didn't get to really have any fun until Friday night.

By then I had gotten rather fond of requesting things from Lacey. She never complained, never refused, and always did what I asked. My commands had suddenly gone from getting a glass of water, to grabbing my dick in the hall. Instead of telling her to finish and leave, I was now telling her to wear a shorter towel when stepping out of the shower. Every time I got exactly what I asked for.

Our parents went to visit some friends, or as I knew by now, went to a hotel room to fuck loudly. I had stayed in and "grudgingly" agreed to watch Lacey. 30 minutes after they left I had her in my room. She was still in her school clothes. A navy blue shirt, and a pink skirt. A favorite outfit of mine, and one I had told her to wear that day. As soon as we sat down on my bed I pulled her into a deep kiss. My hands began to roam the 12 year old body that I was quickly getting to know better.

I pulled Lacey on to my lap in a way that had our crotches pushing against each other. I began to vigorously rub against her through our clothes as our kissing grew more intense. Finally though I pulled away from her. It was only for a few seconds, but I was already starting to miss the feel of her lips and pussy.

I laid my little sister down on my bed and moved down to her skirt. I looked up at Lacey and saw her breathing heavily and looking flushed. The face of a girl receiving a fun workout and one that I loved. Slowly I pulled her skirt up a bit to reveal a pair of white panties with a tiny pink bow on it. I buried my face into her panty covered pussy and took a deep whiff. When I did I heard a sharp gasp, followed by a soft moan.

Pulling down Lacey's panties to reveal her perfect hairless pussy was like opening an amazing Christmas present. Taking another scent of it. I just couldn't help but think it was perfect. Small, beautiful, hairless, and just the lightest feminine scent. It was heavenly. So I did something I had been eager to try all day. I began to lick the 12 year old vagina.

A louder moan sounded this time and lasted a bit longer. I hardly noticed though. What I noticed was how wonderful my little sister's pussy tasted. It was a light sweet taste and I loved it. My tongue began to move around and in her pussy more, reaching every crevice I could. After a few minutes of licking my way around I found her tiny clit. When I did my, Lacey nearly screamed in ecstasy. That was all the incentive I needed as I licked the little button faster and harder. She let out the cutest little moans when I did. It only took another minute before I brought her to an intense orgasm that had her whole body shaking.

After a few minutes Lacey opened her eyes and looked at me. I kissed her on the lips and let our tongues swirl so she could taste herself. As I ended the kiss I held her in a hug.

"How was that?" I asked her

"Good," she responded almost sleepily

"That's good, because I was hoping you could return the favor."

Of course right as I say that, the winners of the worst possible timing award pull into the driveway. It seems mom and dad had actually just gone to visit some friends that night. Which also meant that it would be another night of jacking off alone. It seemed that I was stuck waiting a little longer to receive a blowjob from my little sister.