Imagine you're on a bus... a train... let's just assume it's a bus. It's rush hour. The place is packed. You can't even get a seat, so you're standing with the crowd as the bus jerks along in traffic, making its stops, taking on more and more passengers. You needed to go shopping, so you threw on some basics: a cotton shirt, a zip-up sweatshirt, some leggings, sunglasses. Lumpy handbag. You had zero plans to impress anyone.
A few stops into the trip, a man gets on with a crowd. You lift your eyes from your phone, barely catching sight of him, but you can see he has defined features under dark, stylish sunglasses. He's tall, slim, and unshaven, dressed casually but stylishly. A fresh shirt, tailored jeans... the crowd is too dense to make out his shoes. It's hard to tell from your quick glimpse how old he is, other than that he's not a teenager. He makes his way through the crowded bus and finds a spot standing right next to you. Right behind you, actually. Your eyes return to your phone.
You're close enough to notice that he smells great, even though you can't really see him. The smell, though subtle, catches your attention more than you expect. You notice this, too: that you noticed.
As the bus starts moving, you're also close enough that when the bus stops... starts... turns... he's bumping into you. After the bus lurches and turns just a few more times, you sense that he's not just bumping into you with the swaying of the bus. You can feel the back of his free hand, the one not holding onto the bus, subtly brushing against your thigh. It's moving with the bus... but it's also not.
You realize that it doesn't seem natural... or accidental. Yes... his body is bumping into you, but his hand... he's definitely doing that on purpose. As this realization becomes firm, you feel a rush of adrenaline. Your mind says to move away. Maybe to confront him. But you have another instinct, and it's freezing your entire body: curiosity. Maybe even more than curiosity. You tell yourself that the guy doesn't seem to be doing any harm. You can move away whenever you want. And besides... that smell. And he did look good.
You stare straight ahead but you can feel that his hand is lingering - just a second - on your thigh... and it's definitely not just the back of his hand anymore. You don't move... still fearful but also still hoping that he catches your signal to keep going, even though you're not even sure you want to give it to him. As you're thinking this, his hand separates from you with the motion of the bus. And the next time it lands, you feel his palm. And it's slowly caressing your ass. He caught that sign, whether you wanted to give it or not. He's getting bolder. With his next touch you're now sure of it: this stranger has dropped any pretense... and his hand is now groping your ass. On a bus. A packed bus. And his touch is getting slightly firmer every time his body returns next to yours after the bus sways. Nothing urgent...he's clearly in control of himself... but more and more deliberate with each caress. Pressing just a bit deeper into your flesh... venturing just a bit closer to the middle... and lower.
Another stop. More people get on. Your body is squeezed even closer to his. As the bus lurches forward, you're pressed back into him... you linger for a moment, so that your brain can catch up with your body and interpret what you feel with your back, your ass, your thighs. You think: there may be a bit of... a bulge. You separate from him... probably an inch away. And when his belly touches your ass at the next turn of the bus... his hand is now reaching around to your hip to press you into him. You don't resist. You're frozen... not under his control, but under the control of your body... of the feeling of how strong his desire is for you that it makes him so bold.