I was in my early twenties when, one evening, I went over to my friend Jeff's house to collect him as we were going out for the evening. When I arrived he mentioned that he had yet to have a shower as his younger sister, Zoe, had hogged the bathroom and only just come out. I waited in the lounge watching TV whilst he went for his shower.
A minute or so later Zoe came into the lounge in a large towelling robe and sat on the easy chair to my left. She turned slightly away from me and lifted her foot so her heel was on the edge of the chair and began painting her toenails. I saw the profile of her leg to upper thigh and thought she had fantastic, smooth legs. Not wanting to get caught looking, I carried on watching TV. It was then I noticed that the display cabinet on the opposite wall had a mirrored background to it, and I could see Zoe from the waist downward!
Her other leg had fallen open and I could see right up to her sparsely-haired pussy. Her thighs were silky smooth and her pussy lips full and red. I crossed my legs as I could feel my cock hardening and laid my jacket across my lap. I carried on looking in the mirror at Zoe as she concentrated on her task. I imagined her in the shower earlier trimming her pussy and thought her pussy lips must be red through masturbating. I pictured her fingering her pussy and rubbing and pinching her nipples. I could feel the pre-cum in my cock leaking into my pants as my imagination went wild.
Just then Zoe swapped legs to paint the toenails on her other foot. I sneaked another glance in the mirror. She had widened her stance to balance on the chair and I could now see her pussy lips had parted to reveal her inner flesh. Her moist lips were on full show and I knew I had to jerk off soon or my hardness would never go down.
Just then Jeff returned and I quickly straightened myself up. I murmered something about needing to pee before we go and disappeared into his bathroom. I freed my aching cock and beat it for all it's worth. It was only seconds until I released a torrent of jism as my balls tingled and my knees went weak. I let out a gasp at the relief and vowed to make a point of visiting Jeff in the evening more often!