I couldn't believe my luck when my next door neighbour Jan disturbed me one day when I was working from home and asked me if I could help her daughter Katy fix a puncture in her bicycle tyre. Jan explained that her husband was out at work, she had to go out shopping and neither she nor Katy had a clue what to do with a puncture.
I was only to keen to help. I welcomed every opportunity to run my lustful eyes over sexy young Katy. She's a leggy little beauty with shoulder length dark hair who'd just turned 19, young enough to be my own daughter. Her mother Jan was worth running a lustful eye over too. She's a mature beauty about my age who'd kept a good figure. Since my partner walked out on me a couple of months back my ever faithful right hand had often worked hard in my lonely bed as I thought about what I'd like to do with sweet young Katy or her mother, either alone or both together.
Katy wheeled her bicycle into their back yard. Katy and her mum stood watching with interest as I went through the routine of turning it upside down, pulling out the inner tube and immersing it in a bowl of water, producing a stream of bubbles from the puncture. But I was far more interested in Katy. She was in her usual demure length just on the knee skirt, in brown corduroy, and a cream blouse. Her glasses gave her a look of young innocence, which combined with her skirt clinging to the curves of her bottom and the way she filled blouse very nicely made her an absolute sex bomb. I'd picked up from Katy's father that he was very protective of his innocent young daughter, disapproved of boy friends and forbade her from wearing anything too revealing.
I hadn't gotten far with fixing the puncture when Jan said she had to go shopping and that she expected to be back late. Jan went, leaving me with Katy.
Katy continued to watch me fixing her puncture, but this time she squatted down to be at my level. As she squatted she didn't seem to realise she was treating me to a good upskirt view of her bare thighs and a glimpse of white knickers. As I worked on fitting a patch, to my amazement her legs steadily swung wider and wider, revealing more and more of her white knickers. At first I thought it was accidental and she was unaware she was showing me her underwear. Then she spoke.
"You keep looking up my skirt at my knickers."
I felt my face go red, but then, still squatting in front of me Katy gave me a mischievous little smile and swung her legs as wide as she could get them. As I stared at the full frontal upskirt display of her white knickers taut over the bulge of her sex mound, showing a cameltoe line of her vagina slit and the dark shadow of her cunt bush through the thin white cotton, she spoke.
"If I take all my clothes off for you, will you show me your cock? I've never seen a naked man. Mum won't be back for ages. Go on. Touch me if you want to."
I was incredulous at what I'd just heard.
"Go on ... Touch me between my legs."
Almost involuntarily I reached down between her spread legs and stroked her soft sex mound through the cotton of her knickers, running my fingertips along the line of her vagina. She gasped with excitement and arousal. Then I hooked my finger over the top hem of her knickers and pulled the front down far enough to see her vagina pulled wide open by her spread legs, with her labia peeping out pink and wet with juice, and surrounded by a ring of almost black pubic hair.
"I don't shave my bush off," she said as I gazed at her cunt. "I'm a big girl now."
A couple of minutes later, leaving a patch drying on her bicycle tyre, we were up in Katy's bedroom, a typical teenage girl's bedroom with a girly pink bed cover and matching curtains, and pastel painted walls. We were scarcely in her room before Katy undid the clasp and zip of her skirt, let it drop and stepped out of it. The thin almost translucent white cotton tightly outlining her young bottom looked even sexier than a thong. I fondled her bottom and tickled her along her bum crack through her knickers as she took off her blouse. I'd always thought her a big girl for her age and her breasts slung in the lacy white cups of her bra were every bit as appetising as I'd dreamed in my masturbation fantasies.
"Your turn now," she said, grinning at me as she stood there in her underwear. "Remember our bargain."
I stripped to my dark blue briefs. My straining boner was forcing them out far from my body in a huge taut cone. I pulled them down and let them drop. Released from constraint and with an all but nude 19 year old girl with me my muscle sprung up to its full erect length with my nozzle pointing at the ceiling. Katy gasped.
"It's so big! Are you having an erection? Would you stick all that up my vagina?"
I'd decided I wasn't going to take this little minx's virginity even if she wanted me to, but if a hand job or a suck off or even wanking over her while she posed nude and let me run my spare hand over her naked body was on offer I was certainly up for that.
In a flash Katy was snuggled against me exploring my straining penis and my balls with her excited hand ruffling my pubic hair. While she was playing with my sex kit I slid my hand up her back and fumbled with her bra clasp. She let me get behind her and I unclipped her bra from behind, tickling the soft flesh of her bottom with the head of my penis. I let her bra drop then I ran my hands down her sides and pulled her knickers down. She gasped with pleasure as I fondled her soft well rounded cheeky bottom and slid my hand between her legs to tease her pussy from behind. She turned to stand facing me, spread her legs wide and arched her back to thrust her hips forward and swing her breasts up and out, and she rocked sensuously on her bare feet.
"Do you think my body's sexy? I've never shown myself nude to a man before," she said excitedly, followed by "Ooooh! lets play together!"