Top Definition
A dumb person..a piece of wood
You stupid plank, You lost my plank!
by Kurt NG UD September 19, 2004
There are three types of planks:

A plank of wood
Jonny 2x4's best buddy (From Ed, Edd and Eddy)
or a realy dumb fuck

Choose wisely
Where's my bloody plank?
Don't say anything plank!
What a complete and utter plank!
by Diccyc April 02, 2005
An extremely painful excersice in which one puts their elbows and toes on the ground and straightens their backs. aka Bows and Toes.
PLANK. up for 60 seconds, down for 10
by Nothereman May 21, 2006
A stupid or silly person. Having a similar mental capacity to a piece of wood.
George is as thick as a plank.
by Thee Red Monkey June 01, 2006
Posting up on a object while lying completely flat (like a plank of wood).
Dude, you won't plank that police car!
by Planking Professional July 09, 2011
The clever combination of the words Please and Thanks. Often used after the realisation that you forgot to say please in the first place. Planks has nothing to do with planking.
"Hey mate, pass me the bong"
(Mate passes bong)
"Planks mate"
by V man #1 May 30, 2013
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