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1. To be slapped in the face with a fish and a Snickers bar simultaneously, ideally one on either cheek.

2. To have a smelly downstairs area if you are a lady.
1. "Ow my beautiful face! I can't believe you just fishnickered me!"

2. "Sorry about the smell lads, I'm pretty fishnickered today."
by DrJonas February 01, 2010
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