Me and my GF do this all the time in summer, with her wearing a skirt without underwear. Just stand somewhere - anywhere, where tens, or hundreds of people can see it - and she just lets go, little bits each time, all over the city. We've done it inside shops, railway stations, lifts, on the street, parks, in line at the till of a supermarket, just standing on the sidewalk with people and buses passing by.... in front of the gate of a royal palace... lots of places. We often film and photograph it (I do) for ourselves. *So* much fun! ;)