where does the phrase "all of a 2 'n 8" originate from? It means - not knowing what to do - confused - unsettled
State in Cockney rhyming slang.
Usually related to a state of emotional distress or confusion.
EDIT: Here is @BillJ's explanation (from comments) for the original meaning before the Cockneys overloaded it : "... the expression two and eight, which in full is two shillings and eight pence. When the expression was first coined, we had a 3-tier currency: pounds, shillings and pence. Nowadays we just have pounds and pence."