I love to masturbate on the bus during a long journey. There's something about the movement of the bus (and the boredom of the long ride) that always makes me think sexy thoughts. On my last trip, I was starting to feel horny, so I threw my coat over me as if I were going to take a nap.
Under cover of that, I reached under my shirt to fondle my breasts. My nipples were already hard with anticipation, and as I pinched and twisted them, I could feel my vagina contract involuntarily, almost causing me to moan out loud. Sometimes I can cum just from twisting my nipples hard, but usually I have to be looking at my breasts when I'm doing it since the visual always excites me so much.
With one hand still fondling my nipple, I moved the other lower, sliding it up under my skirt until I reached my panties, which were already getting damp with my juices. I stroked my mons gently through my panties for a while before sliding the crotch of my panties aside. Spreading my legs a bit more, I slid two fingers in between my slippery wet lips, enjoying how warm it was there. I wanted to take this slow, but as soon as my fingers touched my swollen clit, I couldn't stand it. I had to start rubbing. I usually moan a lot when I'm pleasuring myself at home, but the challenge of having to keep quiet makes it even more exciting, and my orgasm totally snuck up on me, taking me by surprise.
I went to the bathroom to clean up, and was surprised to find a full-length mirror covering the entire wall. Still feeling a little cheated by how quickly I'd cum, I couldn't resist undoing my shirt and fondling my breasts some more in front of the mirror. I pulled and twisted my nipples hard, feeling myself getting wetter and wetter. I usually have to wait a while after I climax before I can get truly excited again, but just the idea that I was doing something so hot just a few feet away from a bunch of total strangers was making me feel very horny again.
I pulled up my skirt and took off my panties. Sitting on the edge of the sink, I propped one foot up against the wall and started slowly rubbing my still-swollen, sensitive clit with the fingers of one hand while sticking two fingers of my other hand inside my wet pussy. The movement of the bus made my breasts jiggle, which was a giant turn-on for me to watch. I realized I'd never locked the door, and anyone could walk in on me. No one did, but the idea that someone could open the door and see me pleasuring myself so intimately sent me even closer to orgasm. I imagined a male stranger walking in and seeing me, getting so turned on that he quickly rubs himself to erection and then plunges into me as I sit on the counter. I hold onto him as he fondles my breasts hard, the way I like it. We never speak, just thrusting against each other hard until we both cum, and he zips up and leaves, smiling. That fantasy brought me to one of the most powerful orgasms I've ever experienced, made even stronger by the fact that I was still watching myself in the mirror.