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1 definition by ThePotatoman

 
1.
One who planks. Lying with arms by side and feet pointed. Planks originated in Australia by David "Wolfman" Williams who planked during a game of Rugby on 27 March 2011. A plankster is usually a pro at planking and knows the creative, and humour aspects of the sport.
The man planks often and is therefore a plankster.
by ThePotatoman May 28, 2011