Just a start:

There I was, a-digging this 'ole, 'ole in the ground
So big and sort of round it was......

Chorus

Don't dig it there! Dig it elsewhere!
You're digging it round and it ought to be square
The shape's all wrong, its much too long
And you can't put a hole where a hole don't belong!

And the end:

....
It's not there now, the grounds all flat
And beneath it is the fella in the bowler hat!

Regards