My wife, Lily, has a really pretty niece named Sydney. I watched Sydney grow up. Before lily and I married, I used to help her babysit Sydney. That's what makes this difficult.

You see, Sydney is all grown up now. She's in high school and really into boys and dating. A few nights ago, she text me asking me to pick her up from a friends house. She had had a few drinks and didn't want her folks knowing.

I called my wife and told her I was picking Sydney up from a boring sleepover. Lily worked graveyard shifts at the Denny's two towns over. She gave me the o.k. and told me to set up the guest room for her.

I picked her up at her friend's house around 11 p.m. She looked pretty trashed and was slurring quite a bit. I was frankly disappointed in her. Gave her a lecture all the way home. She didn't seem to like that but it was better than hearing it from her parents, I guess.

Well, we got back home, I picked some of lily's old clothes for her to wear to bed. I told her to take a shower then to make herself at home. I had an early morning the next day and needed to get some rest. She gave me some attitude but did as i demanded. Moments later, I heard the shower running and assumed she would be a few minutes then go to bed. Well, forty five minutes went by and she was still in there. Music blasting. I got out of bed, walked down the hall and knocked on the door. She was either ignoring me or couldn't hear me. Maybe she's hurt? I thought. Maybe she passed out, hit her head? I should go in there.

A few seconds later, I came back with the key. "Hello" i blurted out as I made my way through the dense fog. No response. One hand covering my eyes and the other pulling back the shower curtain. "Sydney? You okay, kid?" She screamed so loud. "Get out!" I instinctively lowered my hand to see what's wrong and realized she was going to town on herself with my shower head. I knew lily did this on occasion but her niece doing this? Wow. I quickly covered my eyes, apologized and got the hell out of there.

There I was, in my marital bedroom, pacing back and forth, trying to make sense of what I had just seen. I watched this girl grow up. Took her to recitals, picked her up from school when she got sick, played hide and seek with her. The worst part is: I kinda like what I saw. I felt wrong.

"Batman?" (The adorable nickname she gave me as a kid after I dressed up like batman for Halloween) "what's up, kid?" I asked. She came and sat down next to me and apologized for the whole thing. She was really embarrassed. She confessed to me that she was really horny since her bf stood her up and she had been looking forward to It all week.

"Look, kid. You shouldn't be telling me this, okay?" I told her. "I know, but you're the coolest uncle I have and the only person who will understand me and not rat me out" i pretty much let her unload on me. She told me she had been sexually active for four years now. She even confessed to blowing her math teacher for an A in her statistics class! She was a little slut. Nothing like her aunt (my wife).

The more she confided in me, the more turned on I got. I noticed her getting more turned on too. Flushed chest, faster breathing. "I can tell by your boner this is turning you on." She said. "If you want, you can jack off while I tell you more about my adventures, batman?" I tried to resist but she started talking about how she blew a drug dealer in the football field for a bag of weed. She too, started touching herself through my wife's old shorts I let her borrow.

"Wanna know more, batman?" She asked seductively while slowly exposing some of her well developed breasts. "If you want me to continue, you have to pull it harder for me" She said. "Harder". She continued talking and taking off articles of clothes until she was fully nude in my marital bed with me masturbating in front of her. "Want me to touch it?" She asked. "I'll even suck it if you get me some booze"

I ran downstairs and fixed her a cranberry vodka. Ran back upstairs realizing it was now close to 1 a.m.
"Bring the whole bottle, batman! Don't be stingy!" Ran back down, came back up with the rest of the vodka. She took an adult sized swig, then another before teasingly licking my penis. "I'll bet you two shots I can deepthroat your whole cock!" "You're on" i exclaimed. She did it. I'm no Ron Jeremy but damn she took my whole length down her throat like a pro. I was impressed.

There she was, giving me the best dome I've ever had in my life. She would look up at me with those big eyes and say "I'm such a dirty slut, batman. Don't you wanna fuck me?" I could tell she was really drunk by then. She could barely stand. She then bent over in front of me. Her knees up on my bed and her sweet ass and pussy on display just for me. I slowly slid a finger in her pussy. She was so wet!

"Put it in, batman" She said, lustfully. "Hold on, kid, let me get a condom on" "fuck that! Let's just do it! It's more fun this way. Please! Just stick it in" She begged. I don't know what I was thinking but i was so drunk on lust and vodka, I just didn't care. She moaned and her back arched as I went in bareback. Her jaw dropped as i slid my entire length down her pussy. Watching my cock disappear in between her butt cheeks as it glided in almost made me blow my load right there.

"Fuck me harder!" She yelled as i pounded away at her from behind. Her ass bouncing with every thrust. The smell of both our genitals rubbing together and the sound her moaning... it all drove me crazy!

Before I knew it I was yelling "I'm coming! I'm coming!" Just as i was about to pull out she yelled "cum inside me, batman! Fill me up!" Once again, I obliged. I came inside her so hard, I didn't even realize she came at the exact same time as me. We came together and it was good.

She offered to be a good little slut and clean me up with her tongue before running off to shower again. This time she only took ten minutes before coming back to bed and snuggling up with me under the covers. My wife came home exhausted, hit the shower for about an hour then joined Sydney and me under the sheets for some sleep. I called in sick to work and the three of us had a blast. My poor wife doesn't suspect a thing.