2 definitions by Dave IROC-Z

Top Definition
Term referring to a person who holds up an entire line of traffic while waiting to turn left at an intersection
I bet I'm gonna have to wait here at this light for another 5 minutes! Left turn Larry is up there making everone late for work!
by Dave IROC-Z January 17, 2009

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1. An action or pattern of actions consistant with those of a knucklehead, or a person with questionable intellegence.
2. Minor actions of innapropriate, silly, or inconsiderate behavior or behavior that causes a mild nuisance, not necessarily with such intent by the actor. It is not as severe as douchebaggery.
Shawn: Man I wish those people over there would keep it down. They are starting to bother me.
Dave: Yes, there is quite a bit of knuckleheadery going on over there.

Teacher: Hey, cut out the knuckleheadery and get your work done!
by Dave IROC-Z February 27, 2009

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