Panties, Wonderful Panties

So, I'm in his bathroom, and the laundry basket is there. Should I? Obviously, No! Did I? Fuck yeah! And right on the top we're a pair of light blue panties. Don't ask me the name or the style. A bit of cloth in front and back with thin, almost stringy, sides. Of course, being in there, they were stained.  

I picked them up and found that the marks in the crotch hadn't dried. They were still, in fact, wet! Naturally, I smelled them. And POW! My head exploded with the scent of a girl. My cock hardened in seconds.

I unzipped and started to think about his older sister, Alison. Alison is something of a superior, aloof girl. She thinks she's better than everyone else and, frankly, there's nothing I'd like to do more than fuck her down a peg or two. I could imagine her, flat on her back, panties pulled to one side and me in her; her initial protests changing to moans as she pulled me deeper. She would finally be urging me to fuck her, fuck her brains out.  

I was stood there, eyes tightly closed, just about to cum. I was planning to take one long, last sniff before holding them in front of me and cumming in the crotch. The suddenly I heard "(cough) Er, you DO know those are mine, don't you? Not Ally's?" There stood Jess, the younger sister.

Busted. Well and truly fucking busted. No chance of saying it was an accident or even, "I didn't mean to."  

Before I could think what to say, Jess closed the door behind her and said, "Go one then. Finish. Let me watch."  

Damn, I was so fucking near. I had to cum.  

Now, I'd love to say she stripped, showed me her tits, and took off her panties. Even masturbated along with me; but she did none of those things. She just stood there. I could see that her pupils were dilated, her breathing deepened, and her little nipples turned to rocks. I knew just how turned on she was. I kept smelling her lovely scent. Finally, when I was close I said, "I WAS going to, um, you know, cum in the crotch." Jess said, "Don't let me stop you." I made sure that I held them in just the right place as I came. Just before that first shot, I felt the soft material touch the head of my cock; it was electric. Jess took in a sharp breath. Then I was cumming, filling her panties with a good-sized load.  

After? Well, afterwards, I was freaking out that she'd tell someone, or worse, say I'd done something to her dad. Sexy as she is, she's younger than me, so nothing doing.  

Even so, I needed to know a couple of things. First, what did she do with those panties? Second, how did she manage to hide them from her dad? He does all the housework there and he's no idiot. Finding his youngest daughters knickers full of spunk is surely going to be noticed.  

I've told Claire all of this. She didn’t think it was a big deal and said, "She didn't run screaming. She stayed and watched. She's curious. If, as you say, all the signs of arousal were there, she probably went off and had a good play with herself."  

Me? Well. After Jess left the bathroom, I had to clean up but not before I had another little rummage. This time, I noticed a slightly bigger pair of panties. A quick smell and you know, Claire's right. All girls do smell slightly different. These were Alison's. They went in my pocket for another time. Now I have something to use when I dream about fucking that snooty, stuck up bitch.