Went around to see our new neighbours this morning.Him ex banker,late 50's Her a legal secretary late 40's. So we had a brew,she sitting next to me at the kitchen table.During the conversation there were several obscure references to the word "bookcase" It was dropped into the conversation for no apparent reason.Every time she said "bookcase" her knee was pushed against mine. Now am I missing something? Is there a language these people use? Anyone come across this?