David Sedaris, a very funny American comedian, who is often on BBC R4, did an amusing piece about one of his performances and book signings. One of the women who queued to have her book signed said 'Oh, you made me put my bra back on'
He was nonplussed at this and asked what she meant. She explained she was at home and heard on the radio that he was performing at a venue near by and she decided to attend. She complimented him saying there were very few circumstances that would make her put her bra back on, in the evening, once it was off.
This is a phenomenon which David S was unfamiliar with, but he discussed it at other signings and performances and discovered there are legions of women across the US, for whom 'bra off, post 7.00pm' is an important part of their evening and a signal for relaxing. ?