This happened about a year ago at my aunt's house during my summer vacation. I arrived late at night after along flight from the west coast. After getting to my aunt's house I decided to wait for every one to fall asleep before I 'relieved' myself on a pair of my cousin's soiled panties. I took the panties up to my nose the smell was magnificent. I could smell her juices mixed with urine giving me an instant hard-on.
As I began pumping my shaft using my precum as lube, I could feel myself about to burst. My cousin, whom I didn't notice was coming down the staircase, as I send streams of warm cum pouring into her panties she asked me what I am doing to her panties in an intrigued tone I tell if she doesn't tell our aunt what happened here tonight, I will show her after our aunt leaves for work.
So morning rolls along and I'm awakened by my beautiful cousin who has black hair green eyes 5'4 with c cup breast she asks 'So when are you gonna show me?' with a smirk on her face. What she is wearing as pajamas almost makes me come. She's wearing a blue nightie with panties so I get up, we go eat breakfast, and as I'm eating I got full on woody watching her with her legs spread open. I get up from the table to try and get my mind off her tight wet pink lips. I sit on the couch and she follows me instead of sitting next to me she sits facing me, straddling my leg. I could feel her wetness on my leg as she began to grind my leg I could feel my cock throbbing now I pulled my dick out from my boxers and she looked at it with amazement. I took her hand and wrapped it around my shaft and showed her how to stroke it. Her hands were warm and soft while she was pumping away I began to slide my two fingers into her tight pussy. It was warm and wet as we came closer to our orgasms. She began to buck her hips. I could feel her pussy squeeze as she came I took my finger out and tasted her wetness. It had an odd taste but I couldn't get enough. I finished soon after coming on her hands and her face. She licked the cum off her face and hands. We spent the rest of that day and the week enjoying each other's juices.