Inspired by about half of the posts in this thread (which is basically on a different topic, but its OP mentioned public loos and things kept, er, moving).
It seems that MN is totally split on whether having a poo in a public loo (or, presumably, a pub, the library, the office, anywhere that isn't your home or your hotel) is either "the worst thing imaginable", or "completely normal, what's all the fuss about?".