A "Timelines" site has this interesting piece of art-history info:
"1986 Sculptor Fred Fierstein dumped a statue called "The Guardian" at the Berkeley Marina.
In a city vote, fans supported the statue and the term -"plop art"- was coined."
(San Francisco Chronicle, 1/15/98, p.A24)
See 'Previous' and 'Next' photos here for additional info I found on this unusual piece.