Here’s a fine earthy poem by Robert Burns. You won’t find it in his standard collections, but if you can find a copy (and good luck to ya!) of his The Merry Muses Of Caledonia, it’s in there:
Cuddy the Cooper
There was a cooper they ca’d him Cuddy,
He was the best cooper that ever I saw;
He cam to girth oor landlady’s tubbie,
He banged her buttocks again the wa’.
Cooper qo she, hae ye ony money?
The deevil a penny, qo Cuddy, at a’!
She teuk oot her purse, an she gied him a guinea,
For bangin her buttocks again the wa’.