My wife is good friends with our neighbor Alison, who lives down the street. We're all in our thirties, but Alison has weathered it extremely well- she's petite with a youthful face, and well-proportioned, with nice B-cup breasts and subtly shapely hips.
Alison's husband has been out of town a lot recently due to his job. It was during one of these times that my wife sent me on an errand around the block to Alison's house to drop off something she had borrowed.
I knocked once, and then a second time, and a third time before I heard motions towards the door. Alison answered the door a bit flushed and out of breath, eyes a little unfocused, and her shirt and sweatpants had obviously just been thrown on. Her nipples poked out through the t-shirt she was wearing; the bra had been left behind.
"Sorry to interrupt," I apologized, though I was only partially sorry now that I got a good look. Alison's hair hung down a bit dissheveled, with the slightest sheen of sweat on her brow.
"Uh, it's okay," she mumbled, trying not to be too obvious in the lie and also trying not to engage in any real conversation. I wasn't going to let this go quite yet, and I stayed right in the open doorway.
"Did I catch you in the middle of something?" I asked, staring right into her eyes. "And do you need any help?"
A long moment of silence passed, she asked quietly, "Can you come in for a second?" I quickly followed, and she closed the door and turned to me.
Her voice was a whisper. "Please stay for a minute," she mumbled. Then, even more quietly, "Please... watch me. I need to cum," staring down at her feet.
"What?" I asked, even though I had heard her. My cock had as well, and was stiffening in my pants.
"Please," she pleaded quietly. "I'm so hot, and I need to get off. I won't cheat on James but being watched puts me over the edge. I was so close when you knocked."
She sat back on the couch, and gestured to a nearby chair. She sat down, legs splayed, and reached one hand into her pants while the other went up under her shirt. She was giving her nipple a good working over, while staring into my eyes as I roamed over her body.