Because she came up from behind me, though, I did have the opportunity to check out her ass clad in spandex as she passed under a streetlight. Following their progress down the street, I realized why she was in that neighborhood as she turned up a driveway another block up, which I could only tell by the reflective material on her running gear. Still thinking about her ass as I plodded along, I figured that she'd probably be jumping into the shower after her run and was envisioning her stripping off her running clothes as I arrived at the driveway I'd seen her turn down. I paused for a moment, looking at the ranch-style house while realizing that I was probably well-hidden in the dark with no streetlights nearby, then started down the driveway. The backyard was dark, which made me think that Mario was probably inside with her, so I looked for a window with a light on and headed toward it.
I lucked out not only in that her window was at about eye level but also because it was open about six inches, so the blinds weren't all the way down. Glancing in, I saw Miss Plainwell still dressed but for her running shoes, with a small towel around her neck and a water bottle in her hand. I guessed that taking the time to ditch her shoes and grab the towel and water had delayed her enough so that I'd arrived at the perfect time. As she bent down to peel off her socks, I realized that I was right. She set the water down on her nightstand and wiped her face one more time before dropping the towel with her socks. I was already nearly erect when she reached for the bottom of her tank-top, which I realized was also a sports bra as she pulled it up to reveal nothing but her small, perky tits beneath it. My eyes were locked on her hard nipples and small areolas as she dropped her top but followed her hands as she started to push down the waistband of her spandex shorts.
I didn't quite have a full frontal as she pushed her shorts and panties down together, but got a nice view of her trim, light brown bush, which had me fully rigid and prepared to stroke my cock. Before I whipped it out, though, she gathered up her clothes and headed into the adjoining bathroom, giving me a nice look at her tight, muscular ass. I heard the shower come on and realized that I was probably going to miss out on seeing her toweling off if I couldn't see into the bathroom window, so I looked around and discovered that it was smaller and higher up than the bedroom window. Glancing around, I could see a couple of chairs on her patio, so I quickly grabbed one and set it beneath the bathroom window, making a mental note not only to return it, but also to make sure I hadn't left footprints on it. This window, also, was open a few inches as were the blinds, so I could see basically the entire bathroom. I waited patiently as Miss Plainwell showered, my erection diminishing but not going away entirely.