1. Demonstrating a lack of knowledge, especially related to a technical field.
2. Attempting to "fake it" in front of a group that will definitely see through you.
3. A serious blunder, for example exposing your login password to the entire audience during a presentation.
Dude, I just pulled a brockbank.

Who does he think he's kidding? He's such a brockbank!
by geezerbeezer October 21, 2005
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