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2.
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
 
1.
an elite force of highly technical people who practice the art of planking.
Ashley Schaffer is the best plankster in the World.
by Schmaster June 05, 2011