The Babysitter

So.....another memory. When I was just about 16, just after school started up again, my parents went off on a vacation. Just the two of them. My sister had run off to get married young. So I would have been home alone, except my father was sure I would do something.....what I don't know. I was too much geek to have a party.
So my mother got a friend of hers from work to come stay for a week.
The Babysitter! A little insulting.
She was a nice looking woman in her late 30s, or so.
She did her stuff and went to work, and I did my stuff and went to school.
We only saw each other, mostly, for dinner and leaving in the morning.
A few days in, I came home from school, and being in my teens, I had some need to give myself a quick-off to relieve those spontaneous erections.
So I was sitting on my bed, giving myself a nice handie, and I thought I heard a noise.
I quickly covered up as well as I could, and when I could get up without a huge bulge in my jeans, I searched the house, but I couldn't find anything.
Fast forward to the last day of the babysitter staying. She came to dinner, and was a little tipsy. It was a Friday and I guess she was celebrating the end of the work week.
We were eating and suddenly she said to me, "there's no shame in being gay."
"Uhhhh...me?"
"Yess. I saw you playing with your big dildo, sitting on your bed."
Confused, at first, I said, "I don't own a dildo."
She responded, "Oh....you were sitting there stroking it. I saw you over your shoulder."
And then it hit me.
"I...uhh....that's not a dildo....it's not.....", I stammered out, face getting really hot and I started flushing from embarrassment.
She just stared at me for a little while and said, "Uh huh", looking quite skeptical.
I don't know why I did what I did next, but I stood up, unzipped my jeans and pulled out my now hardening penis.
At this point, I think I should say, I'm a grower....it looks normal sized soft, but it gets really larger hard.
And it takes about a minute to elongate and thicken to full size. Like there's only enough blood to share.
So the babysitter is looking all shocked as she sees my penis before her. Eyes wide, and almost angry.
But it keeps growing longer and thicker and harder.
At one point she mutters, "It keeps growing....does it stop?"
And then, it was all hard. So eff-ing hard. It was everything I could do not to grab it and stroke it.
And the babysitter now had a different look on her face. Utter amazement.
"That's not.....that's not a......it's not....that's the biggest cock I've ever seen. I've seen some cocks. And that's the largest thing I've ever seen....by some.....it's not real...if I hadn't seen it.....oh my god..."
And I was frozen. Staring at her face.
And then I saw her hand start to reach out towards it.
It was in slow motion.
But just before she touched me, she stopped.
"What am I doing?!? He's a c***d...I can't do this!"
And she stood up suddenly, stalked off and went back to the room she was staying in, and slammed the door.
I was left with a huge erection, and no idea what to do next.
After a minute, and she didn't come back, I went to my room and closed the door, and finished the erection with an explosive orgasm, wondering if she was also masturbating.
I only ever saw her again the next morning, after the parents returned, as she was getting into her car, and she finally came out of the room she was staying in. An awkward wave goodbye.