A term used to describe a massively mangled colon. Deriving from the condition of the overused hole during male or femal anal intercourse. Sometimes getting so "battered" that said hole is left gaping and hanging.
Mary was saving herself for marriage, so the only way she could divulge in her lusty desires was to indulge in the anal intercourse. She was commonly bent over so much that she is almost a permanent hunch back.
In time, her ass turned into such a BATTERED CAVERN that we could hear echos when she farted.