Bourdain ate something's rectum on one of his shows, also sausages with the faeces left in for 'flavour'.
There is a rumour that, as battered pig ring pieces are indistinguishable from squid rings, they are often used as a cheaper substitute in unscrupulous restaurants.
I take back that bit about tea winning this thread, rich is pulling even.
Hmm, it's close but not exactly what I had in mind. This was the actual outside of the bumhole, all puckered like.
Good googling effort, though.
I wonder if HMG has a nice recipe for these?