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1.
Similar to being called a "mudblood" in Harry Potter. It means that you're a mutated being in human existence. Often used as a very rude insult maintaining that you are superior to them.
Person 1: I don't want to go to work today...
Person 2: Go straddle a narwhal, you chlorinated gene pool.
by ThatsMyPie July 21, 2011
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