They all think I went to a public school - thus "Posh" - however, the reality is it was (and still is) merely an extremely good Grammar school. It's all down to the fact that I don't speak like a "Sarf Londener".
She is called "Decks" due to an incident about seven years ago at a work's Christmas do, where she intervened during a drink induced fight and had no option other than to deck the offending female.
I am fully aware that the same fate may befall me if I don't behave.