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1) Emotional: when someone is too overwhelmed to emotionally deal with the information (news) just received

2) Intellectual: when someone is too confused to input or comprehend the information (knowledge) just received (reviewed)
1) Emotional: Jane got brain-wacked when she found out that her boyfriend Dick had slept with Lilith.

2) Intellectual: The CEO was brain-wacked when he read how low the numbers were in the quarterly sales report.
by Torreycat January 26, 2011
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