Banbury story

A story that does not make sense or which rambles circuitously without apparent end. The old sailor, after several glasses of whiskey too many, began to tell some rambling Banbury story, which none of us were able to decipher. A: "Do you know what actually happened to him last night?" B: "Not a clue. How could anyone follow that Banbury story he just told?" Yeah, if Tad's in the middle of some Banbury story, and it's time to close up shop for the day, just cut him off.