An American shanty group called The Boarding Party sang a stanza at Mystic
in 1988 (with Hugill in attendance) which, to judge from a parallel in
Randolph's collection, is entirely consistent with tradition :

Sally in the kitchen making duff,
The cheeks of her ass go chuff, chuff, chuff.

2005. Paul Stamler quotes Jonathan Lighter on the BALLAD-L email
list serv. in the Camouflaged shanties, Pt. 7 (long) thread.
I don't currently have access to the original emails.