Ok, this is a slightly misleading node title, but..
I was walking down Oxford Street in central London the other day, and I passed a phone box which, as usual, was plastered with cards advertising the services of local prostitutes. Most of them were the usual sort of thing, "Busty blonde schoolmistress seeks bad boy in need of spanking", "Good looking young guy - all services offered", with the usual cut'n'paste photos from porn magazines purporting to picture the lusty advertiser.

One, however, caught my eye - it was a plain white card, with nothing but a simple, four word, hand-written message on it - "I like my job" followed by a phone number.

I have to admit, I thought it was classy.