This song was found in the Bristol Radical History pamphlet (#6) ‘The Life and Times of Warren James’ about the Forest of Dean enclosures:

Arouse ye, free miners, who delve in old Dean,
and all ye freeholders with rights o’er its green,
‘Tis time to be stirring for danger is nigh;
and if ye bestir not, you’ll find by and by,
that truth, and truth only, is this now I tell,
They’ll suck out the egg if they once prick the shell!

Say will you surrender, or barter away,
your Father’s old charter – twelve months and a day,
while yours, the bad bargain, to take what they please,
in rents and in taxes, in fines, and in fees.
Remember, free miners, yea, ponder it well,
They’ll suck out the egg if they once prick the shell!

Anon., The Foresters’ Egg! A Timely Warning!
Dean Forest Mercury, 23 may 1884

You can read more about this here – https://www.brh.org.uk/site/articles/pity-the-poor-buttyman/ and buy their excellent pamplets here – https://freedompress.org.uk/product/the-life-and-times-of-warren-james/