It was the fourth of July when it happened. It was a particularly hot summer in the panhandle of Oklahoma. We had some rain assuring the fire works display would go on as planed, however the air was heavy with moisture. I was eighteen years old, and had just graduated high school in May. My Aunt Sara had moved into an apartment just three blocks away in April. I had watched her for a couple years. She was about 5'6" with mousy brown hair, but it wasn't her hair I looked at, Sara had a nice firm ass, and a pair of pert c cup tits with nipples that poked through her t-shirts just begging to be sucked. She often came over evenings to talk with my mother. They were both divorced, and I guess they kept that their common ground. Other than that they were very different people. Any way, Sara normally wore shorts and t-shirts in the summer. For as long as I had been interested in sex I had been dreaming of seeing her tits, out in the open, I had no idea just how close I would end up to them.
She came over about 10:00 AM that morning, we weren't doing anything that day and my mom was leaving for the night to see her boyfriend at five. They sat around watching the tube for a bit and Sara said that she would like to wash her car. Having a TV in my room I had been on my bed watching the "4th of July Extravaganza of movies" on one of the networks. When I heard her car pull up beside the house my interest was peaked. I leaned over to glance out my window and nearly fell into the floor. Sara was washing her car, but to keep cool in the summer heat she had turned the hose on herself. The printed white tee-shirt she was wearing now did nothing to obscure the fact that she was with out a bra.
Staring at the wet transparent fabric plastered to my aunt's luscious breast, I suddenly felt as if a marble rod had been some how implanted wear my dick once was. I thought it was going to rip the seam of my shorts! Fortunately my door was shut, so I was able to grab the Vaseline next to my bed and start pumping my cock. I stroked myself slowly as I watched her wet body shimmering in the sun. I was almost to the point of cuming when she turned the hose on herself again. I shot my load uncontrollably, as she cupped one of those beautiful mounds, directing the water directly onto the nipple. I didn't wait to see if she did any more, Mom would be calling me for lunch any minute and I had one heck of a mess to clean up.
I had decided after my view of the car wash that I should probably change from my running shorts into cutoffs. They don't hide a hard on, but they sure obscure it a lot better than loose cotton. I found out how wise this was as I went to the kitchen to grab a sandwich, Sara had changed out of her wet shirt into a halter top that made me almost as hard as before. It was during lunch that I started to suspect my little peep show had not been a coincidence. Sara waited till my mother went for a refill on her drink, then looked strait at me and w inked. "Jon would you be so kind as to help me wax my car this afternoon?" She asked it with out even a hint of the longing I had hoped to hear, but still I had to wonder. "Sure Aunt Sara, No problem, you want me to drag out the shop vac to do the inside to?" I was hoping to get a little more response from her and I did, though I missed it at the time, "no that's alright I think the back seat is plenty clean enough for all it gets used."
After lunch Mom said something to the effect that she was headed down town to catch the sidewalk sales. She was hoping to find a new swimsuit to wear in her boyfriend's pool that night. Sara and I headed out to the garage to get wax and rags for the car. "My God it's hot out here, You won't mind if I shuck these shorts and run around in my bikini bottom would you Jon?" Trying not to show too much enthusiasm I answered, "Sure Aunt Sara, what ever you want." I may have been gathering supplies for the car with my hands but my eyes were glued to Sara's ass as she pushed her shorts down around her ankles and stepped out of them. As she rose she rubbed her hands up along her calves and thighs, ending up with her hands on her ass. Watching this I knocked everything off the shelf I was reaching for.