Life at the End of a Tampon String

I know this is a horrid subject to broach particularly since my blog has been so quiet lately (in case you hadn't noticed it's the Holidays).

I'm on my bus heading home after a long and productive day (hi Matthew). As I was waiting for it to arrive I glanced down to discover a used tampon. Its cotton was split to reveal its contents and its string was flickering in the wind created by oncoming traffic.

I'm no naieve. I've seen tampons at various stages of wear, however what puzzles me in this case is under what circumstances did this particular specimen end up at the bus stop? What opportunity arose for the wearer to remove and discard it in such a public venue? What a brazen act of conspicuous exhibitionism.