In the 17th century, a sexual connotation is attached not to the bread itself but to "a dance that involved revealing the buttocks and simulating sexual activity"; this activity was known as "moulding" cockle bread.
John Aubrey writes of "young wenches" indulging in a "wanton sport" called "moulding of Cocklebread" where they would "get upon a Tableboard, and as they gather-up their knees and their Coates with their hands as high as they can, and then they wabble to and fro with the Buttocks as if they were kneading of Dough with their Arses". ==Nursery rhyme==