Derivative from the word "rookie" meaning lacking general skills or experience, and "bear" the most terrifying and overpowering of all mammals. It is understood that individuals labeled as Rookbears are incredibly incapable at anything and pose a major danger to themselves and society. Think of a really really stupid bear.
1) Get a load of this bitch! Can't even tie her laces without FAILING EVERY OTHER ASPECT OF LIFE. What a total rookbear.

2) Dude I know how to blog, I'm not a Rookbear.
by PappaBear February 5, 2010
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