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Derogatory term for a skateboarder. Refers to behaviour which is stupid, immature, jockish or inconsiderate, as popularized in the 'Jackass' TV series and Movies.

Skateboarders ride on a short plank of wood and "Thick as two short planks" is a well known term for a moron.
"Putting that shopping cart in front of my car was really smart Shortplank."
by DG101 May 24, 2007
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