In the days when the Lord Chamberlain's office use to have to censor the morality of stage productions one of the ways in which the Music Hall, in particular, and other production companies use to avoid censorship was by the use of the double entendre A phrase, saying or sentence that can be interpreted in two different ways. One of which is usually dirty. A classic example would be the Mari Lloyd song She Sits Among the Cabbages and Peas a song which is clearly about a lady gardener. If you can see a less innocent meaning to the words it is because you have got a dirty and corrupted mind, and if you have a dirty and corrupted mind you are not fit to be an arbiter of public morality.
And therein lays a problem with the Labour response to Emily Thornberry's controversial tweet:
The picture IS just an Image from Rochester, that the Labour Party, as a whole, can see a double entendre in the picture - that is so damaging that it has lead to Thornberry's registration / sacking, revels a great deal about Labour's corporate thinking about those who live in terraced houses, work in white van jobs, are proud to be English – that they saw the "joke" reveals as much about the rest of the Labour party's thinking as it does about Ms Thornberry's.