She couldn't say that I'd peeked into her room, either — Teresa knew full well that I always knocked on their bedroom doors just so I didn't see them when they didn't have anything on or interrupt anything they were doing; she'd even told me that the girls actually appreciated my discretion, that way.

Despite the visions of Donna that kept crowding my thoughts, I spent the rest of the afternoon trying to figure things out. What the hell was Donna trying to do, and why was she doing it? Was that just a one-time thing after I'd seen her in the shower? If not, what else might she be up to?

What, if anything, could or should I do about it? Those, and what seemed like a thousand other questions, kept my mind busy until Teresa got home from work.

As the next couple of weeks went by, Donna contrived to let me see her topless a couple more times. Both times, I simply looked her over until she chose to put an end to her little "show". It was approaching supper time one night, and I knocked on the door to her bedroom to let her know that we'd be eating soon. She told me it was okay, and when I opened her door, she was standing there stark naked and facing me. As I told her what I'd come to, she didn't make even the slightest move to turn away or cover herself. Even after I'd finished, she continued to stand there for several seconds before calmly turning around and giving me a clear look at her ass.

The sight of it had my cock rising in about half a heartbeat. It was small, obviously firm, and nicely rounded; when she took a small step forward, I watched as each of her cheeks clenched but didn't noticeably change shape. Trying to play it cool, I simply told her she might want to hurry before backing out of her room and closing the door.