A while ago, a farmer walked through a pork processing plant in Oklahoma with a friend who managed it. He came across boxes stacked on the floor with labels that said “artificial calamari.” So he asked his friend “What’s artificial calamari?” “Bung,” his friend replied. “Hog rectum.” Have you or I eaten bung dressed up as seafood? Ben investigated.
The wonders of the English language:
https://www.thisamericanlife.org/484/doppelgangers/act-one-17
Technically Bung can also be cow rectum, and is sometimes used as a (non-edible) sausage casing.