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1.
The ability to break any metal object.
Dockboy is to iron what Kryptonite is to Superman
be careful with that NOS or you'll Dockboy your engine.
by David J Lott August 22, 2008
 
2.
The act of being a dock. (See dock, mitch)
Jeffrey and Electrii were being dockboys while r3ks was getting killed.
by R3ks April 11, 2009