Actually Dave, I've never been south of Brum (well, not often)but I've always picked up on the fertility side of our customs,(Bean Setting anyone?) though I do concede I am not an academic or anything.
Take the George play -We are divided on Its' true original purpose in our version but the birth, death and resurrection themes are universal and I'm sure it's no coincidence that it parallels with the changing seasons and the agricultural cycle.
But whatever your take it's a bloody good laugh and a chance to fly your colours, so I hope you have a good day
Cheers