A woman dressed in a brown habit started acting erratically and disrupting a monastery in Belfast Ireland. She's now been banned from the premises and I was going to be like "who let her in??" but then-
How do we really know who's a nun or not? We really just identify them by their cloths and the tingle that runs up our spine when we recall those ruler hand slaps. Really, anyone could pretend to be a nun.
On a completely unrelated note, where does one actually buy a habit? Asking for a "nun."