* Note: everyone in the story is, of course, over 18 *
It was a Saturday morning. My parents were away on business, due back tomorrow. I'd had a long week of college, and last night I'd been studying hard for my exams. That morning, I'd woken up late, and as usual I had morning wood -- I was a teenage boy, after all. I always slept naked, so I didn't even need to slide my underpants down. I just pushed the covers to one side, stretched out across the bed, star-shaped, and then I took my cock in my hand. I started tugging slowly on my dick, thinking about my mom's friend Trudy. Now, Trudy was not an attractive woman, by any means. She had a slightly overlong face, and intense, severe features. But we'd all gone swimming recently on holiday, both families, and I'd been surreptitiously checking Trudy out in her swimming costume. At this point I liked slim, skinny women, with small breasts and tight bottoms, and Trudy was definitely that. While talking to me in her bikini, Trudy had taken an involuntary glance down at my trunks, as if checking out whether my cock had stiffened in reaction to her. That quick little glance had really fuelled my imagination. As I gently tugged on my dick, I thought about her taking a shower after a swim. I pictured her small tits, erect nipples, and (I imagined) clean-shaven pussy. My balls tightened, I sighed loudly, and I started settling in for a relaxing and (in my judgment) thoroughly well-deserved wank.
And then something happened that changed my life forever.
The door opened.
It was our cleaner, Barbara. She was in her late sixties; a cheerful, weighty woman, with big breasts and an even bigger smile. Barbara had always come on Mondays... somewhere in the back of my mind, I suddenly remembered that she'd changed her day this week. And I'd forgotten. And now, she was standing in the doorway, mouth open. Her gaze immediately locked on to my cock. She gasped.
"Oh my goodness!"
I was so shocked, that it took my brain a moment to catch up. I actually continued pumping my engorged cock for a few seconds, staring at her, before I came to, and scrabbled to pull the covers over my naked body. I could feel my face immediately burning with shame. My cock shrivelled and shrunk.
"Oh god Barbara, I'm so sorry. I've got no excuse."
Her mouth kept the O-shape for a few seconds, then she laughed. It caused her big breasts to jiggle, and she smiled at me warmly. "Oh don't be silly. I was just surprised! You're a young man, with all of those physical urges young men have. I'd be more surprised if you didn't have a good wank every day."
Hearing her say the word 'wank' was really quite arousing. I felt my cock tentatively stiffen again.
"I... I guess so. But still, I'm really sorry you had to see that."
She laughed. "See what? A handsome young man naked, tugging on his lovely big willy? Believe me, that was the highlight of my week!"
My cock stiffened even further at this, now approaching its full length.
"I... you.... You really don't mind?"
"Darling, of course not, I don't mind at all. We all do it! Even at my age, I like to give myself a good rub down there every now and then."
I pictured her touching herself, and the image, to my surprise, caused my cock to viscerally ache. She was still flashing me her warm smile.