This term is based on the endless circular discussions one hears (and possible participates in) in bars and other places where people are intoxicated. A wino, in USA slang, is a mentally addled drunk of the lowest sort, the kind who talks to himself on street corners.
Some people in bars might do that, but winos??
Artistic exaggeration -- Original Poster
Not to be confused (for your own safety) with rhino arguments -- do not aggravate a drunken rhino.