Well, "Do You Love An Apple," isn't bawdy per se, but it contains one of my very favorite lines ever:

"Before I got married I wore a black shawl,
But since I've got married, I wear bugger-all!"

ahhh...gotta love it. :)

And then there's always Kate Rusby's "Cowsong,":

"Oh, when this young man he awoke,
Both girl and cow were gone;
And also were the shoes he wore
And the trousers he had on!

So come all you young men, near and far,
Never heed a maiden's call;
Never trust a girl with your mother's cow,
Never let your trousers fall!"

I might not have got all the words correct, but you get the idea. :)

M