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A phrase typically shouted out by a Russian chess player at another for their abysmal move in a chess match. The move must be so bad, that even a novice can detect the error.
What? Really? That was stupid! You fish brain!
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by SithLordTrevor August 06, 2018
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When You pull your balls out and put them in your hand under your shirt, then ask people if they are interested in seeing a fishbrain before exposing yourself
Jock"Hey dude, you wana see a fish brain?"
other guy "Sure"
Jock "Take a good look."
other guy "aww thats gross man"
by Julio Montano May 07, 2006
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