The contents of a well-used but badly flushed lavatory, the bangers (sausages) being the turds and the mash (mashed potato) being the bog roll.
"Cinders and ashes, Thomas, your coaches are a disgrace", cried the Fat Controller. "There's soot all over the windows, used tickets all over the floor and Clarabel's khazi is full of bangers and mash!"
a bizarre 80' cartoon about a couple of schoolboy chimps.
Might have been cancelled due to alledged rascist undertones eg. the chimps tended to mug old ladies, listen to hip hop and wear gold chains.
was follwed on by the hilarious but short lived 'Coons go to wog town' in 1990
"bangers and mash, bangers and mash them chimps are imps there aint no doubt, bangers and mash, bangers and mash there aint no missing it they keep on monkeying about, bangers and mash bangers and mash all they want to do is have some fun!"