I'm surprised that I couldn't find this bawdy old number in DT. The tune is Villikins & his Dinah

'twere way down in Dorset or so I heerd tell
There lived a young maiden and her name it were Nell
Her were fair wide and handsome and sweet seventeen
and her longed for a ride on me threshing machine

Chorus
I 'ad 'er, I 'ad 'er, I 'ad 'er, I ay
I 'ad 'er, I 'ad 'er, I 'ad 'er, I ay
I 'ad 'er, I 'ad 'er, I 'ad 'er, I ay
and I ups and I shows 'er the way

'twere one summer's morning in the merry month of May
when most of the farmers were out making hay
I cocked up me ear'oles and heard a girt scream
I says "Ah there goes Nell on thick threshing machine"

Chorus....

'twere one summer's evening in the merry month of June
when most of the farmers were a lookin' at the moon
I said "come to the barn Nell where us won't be seen
and I'll show 'ee the works of me threshing machine"

Chorus....

I opened the barn door and there stood my dream
'er worked on the oilcan whilst I worked up the steam
'twere wondrous to see both the thrust and the drive
and when 'er come out 'twere more dead than alive

Chorus....

The flywheels and the pistons were a going around
when from out the steam whistle came an 'orrible sound
I puts down me hand for to cut off the steam
but the chaff had been blown from me threshing machine

Chorus....

Now nine months later this baby she bore
the pride of his Mother he was to be sure
and under his napkin could plainly be seen
a bran' new two cylinder threshing machine.
Chorus....