Jill,

It is illegal. It falls under the category of Indecent Exposure like urinating in public would fall into the same offense group. Of course, you have to get caught. As you know many people pull over the side of the road (which scares the bejeezes out of us because we think they are v**) to run into the woods to pee. Is that illegal? Technically yes, but no police officer would arrest someone for doing it as long as they were not parked illegally. However, if someone decided to urinate in the middle of a crowded mall and it drew attention, a nearby police officer would surely arrest that person. It is the same scenario with Tampon Girl. I would guess that most, if not all airlines, now that we are post 911 and post-exposives-in-the-undies era, would have arrested her upon landing the aircraft.

Stella