Here are the lyrics as best as I can remember.

BOLD SIR JOHN

Now Bold Sir John was young at heart,
And Bold Sir John was gay;
He strolled the woods, the fields all round,
A-heeding Mother Nature's sounds;
The twittering of the birds all day,
The bumblebees at play.
The Twit! The Twit! The Twit! The twit!
The twittering of the birds all day;
The Bum! The Bum! The Bum! The Bum!
The bumblebees at play.

As Bold Sir John continued on,
A-viewing natures ways;
He asked the Lord, "Come tell me pray,
Why elephants live so long, they say;
Your flies live but a day then they,
Drop dead upon the ground".
Your Flies! Your Flies! Your Flies! Your Flies!
Your flies live but a day then they;
Drop Dead! Drop Dead! Drop Dead! Drop Dead!
Drop dead upon the ground.

As Bold Sir John walked on afar,
He spied a maiden fair;
"I beg you sir don't come too near,
For I've seen many a maiden here;
Get lost amongst the new mown hay,
So doff your hat I pray".
Get lost! Get lost! Get lost! Get lost!
Get lost amongst the new mown hay.
Sod off! Sod off! Sod off! Sod off!
So doff your hat I pray.

When Bold Sir John return'ed home,
They gave him gin to try;
"Don't fill me with strong liquor up,
Nor give me grape nor grain to sup;
Pour cowslips dew into my cup,
A Puritan am I".
Poor Cow! Poor Cow! Poor Cow! Poor Cow!
Pour cowslips dew into my cup.
Up You! Up You! Up You! Up You!
A Puritan am I.