Walking down the subway tunnel, someone’s skirt rides up

You’re walking down a clean, bright subway tunnel with a bunch of people. There’s a mom with a little kid in pink pants, another woman with a big bag, and a few others. One girl in a short skirt walks ahead, and her skirt rides up a bit as she moves. You can see her underwear. No one seems to notice or care. The lights are harsh, the floor is shiny, and people keep walking. It’s just a normal walk, but one moment stands out — the skirt riding up. No one stops. No one looks back. Just people going where they’re going, and one person’s skirt accidentally showing a little too much. It’s not a big deal, just a moment in a busy tunnel.