Today I'm doing just that. I'm sitting on a train wearing a tight Lycra unitard under a tee-shirt. The unitard looks like cycle shorts, but it goes over my shoulders under the tee-shirt to keep it tight.
The bulge of my cock is small and harmless normally, but becomes obscene when I get hard, as the tee-shirt isn't long enough to cover it.
So, I have to not get hard or I'll be arrested. But I'm writing horny porn! My cock is hard and throbbing in its thin, tight covering, but my notebook is covering it. So as long as I don't stand up I'll be okay.
I can't help noticing an attractive girl on the seat over the aisle. She's wearing a boob tube and a short, floaty skirt.
She smiles at me. I smile back. She smiles some more, with a certain twinkle in her eye. I smile some more back. Then she moves over to the seat next to mine.
"Hi," she says.
"Hi," I reply.
"I couldn't help noticing that erection you got when you saw me. It's looking good!"
She thought my bulge was just because of her? I say, "Well you're looking great yourself!"
She smiles some more and says, "Thanks! So what do you like that you see?" as she wriggles her body, making her breasts jiggle.
Where to start! I say, "Your breasts are looking very perky there. I can't help wondering whether you have a bra on under that top?"
She leans in and whispers to me, "What you see is what you get. I'm not wearing anything under any of this. In fact now that I get a closer look at your cock, my pussy is making this seat wet. It needs some action, I just need some help."
I don't know what she's suggesting, but I want to be part of it. "Sure!"
She takes my hand and slides it under her skirt. My fingers find her pussy, and she pushes my hand inwards. "Oh yes!" she whispers.
She reaches out and grabs my cock in its Lycra. She says, "Hard boy, you must be ready to shoot."
"Yes I am!" I reply. As she squeezes and rubs my cock, my thumb finds her clit and tickles it while my fingers work her pussy.
She says, "But if you cum now, you will have cum stained shorts and everyone will know you've been a naughty boy."
She rubs harder, then grabs my balls. "I don't care," I say.
"I do," she replies, "I want you horny as you make me cum."
She keeps teasing my cock, and I keep thrusting my hand in an out of her pussy.
Suddenly, she squeezes my balls hard as she screams. Everyone must have heard her as her orgasm peaks in that ear piercing scream.
She slumps back with a satisfied smile. Then she says, "Good boy! Now, here's where you get your reward."
She moves towards the aisle and bends down to bury her head in my lap. By now, everyone on the train is looking at her, but she doesn't see to care. She flicks her skirt up so her bare arse is showing.
I don't know what she's doing, but my cock head is somehow rolling around inside her mouth. She's working it, thrusting it, licking it, and all sorts of things I can't describe. It doesn't take long before I'm stifling a scream as my cock is pumping out cum, and she's sucking it up through the Lycra.
Finally, she sits up, looking very satisfied and licking her lips. She says, "You're right, you do look like you've been a naughty boy."
I look down to see the huge great stain of saliva and cum drying around the still hard shape of my cock. That would be hard to explain.
She kisses me, and says, "Same train next week, Andy?"
I reply, "Sure thing, Linda."
When I met Linda on the train last week was an even more sexy experience, but that's another story...
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