I'm masturbating in a train restroom, slowly and gently stroking my soaked and swollen clit. Every now and then my fingertips brush against my vaginal entrance; no more.
It isn't unusual for me to get off in a public restroom. But I'm normally very efficient, trying to finish as fast as I can so as not to keep anybody waiting. Yet today, I'm deliberately relaxing my thigh muscles and glutes, which by force of habit keep wanting to grind against my hand for maximum friction. I don't want to come too fast today. I want to enjoy this.
I accept that somebody might be waiting outside. In fact, it turns me on. At this pace, I could keep going for an hour, and nobody can do a thing about it.
I take the widest possible stance that the cramped stall allows, and lean backwards against the sink, looking at the ceiling and imagining a camera there. I imagine being watched by an entranced staff member, or filmed and posted on a porn site, this greedy slut who won't even hurry the fuck up.
I imagine you coming in the door, crowding the tiny room further. You take in the situation, your face hard. You ask me what the fuck I think I'm doing here. If I thought you wouldn't notice me sneaking off to play with my pussy. You drag my hand out of my pants, hold my wrists above my head with one hand, then grab my pussy with the other one, saying:
I know this pussy far too well. I know how wet and greedy it gets.
The swamp you find between my legs proves you right and you smirk.
Five hours on a train without any fucking is just too much to expect from you.