(I might have a recording of this somewhere, I'll check)
From memory:

Three Jolly Boys:

Now you went for a walk sir ?
Aye sir aye,
And you did as well sir ?
No sir no !
He did did he not sir ?
Aye sir aye,
He cannot deny it
No sir no !

For one says "aye", the other says "no",
And we are three jolly boys all in a row,
In a row, in a row,
In a row, in a row.
And we are three jolly boys all in a row

And you met a fine girl sir ?
Aye sir aye,
And you did the same sir ?
No sir no !
He did did he not sir ?
Aye sir aye,
He cannot deny it
No sir no !

Now she's having a baby
Aye sir aye,
And you are the father
No sir no !
He is is he not sir
Aye sir aye,
He cannot deny it
No sir no !

Usually led by the person in the middle adressing the chap on each side in turn.

AndyG