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2.
something rare or nonexistant (because, a roecking horse does not generate maure)
The Pictures of the encounter with the storm were like rocking horse shit.
by The Return of Light Joker April 11, 2011
 
1.
Something so rare as to be non-existent.
He told the truth? That's rarer than rocking horse shit!
by Finbarthebad May 19, 2007