It was actually writen by Scotsman Watt Nichol who played around the clubs in the 60s. Here it is

WE'LL EAT AGAIN by Watt Nichol

The Year was nineteen forty three;
The time was midnight in Peterlee;
The place a shelter for air raids,
Where a family had been for the last three days.
Never taken unaware
Mother had stored some tinned food there,
And father laughed and gaily scoffed
For the damp had taken the labels off.
And when it came to eating times
A can was chosen by eeney meeney rhymes.
But every can they went to choose
Provoked another doze of blues,
A dozen cans failed to please
For each bare can contained green peas.
Now if the peas had been small in size
With the garden variety that satisfies.
But all were king size soaked in brine
The great big stodgy marrofat kind.
And though mother warned they might cause wind
Father consumed each and every tin.
Just one tin left, "What can it be"
Leave little Willie for to see.
" Corned beef or Spam God please"
"What is it Willie?" "Ah more green peas"
Their laughter seemed to fill the night,
When a knock at the door gave them all a fright.
"Turn those lights way down low,
This is wartime don't you know.
During a raid you'll all sit tight,
Completely silent and deadly quiet."
Well father farted, what a belter,
Nearly cracked the air raid shelter.
Mother hit him with her slipper
and father replied with another riper.
Little Willie, thinking it was all a game
He tried his best to do the same.
And whilst mother raves and rants
Little Willie shit his pants

This is one for Spaw
Cheers Bill