To describe a VERY VERY stupid person trying to do "smart moves" in a dangerous or non-dangerous situation or to describe a blonde hair person's personality.
These New Yorkers today are real rock scientists when it comes to driving on the road let me tell ya' .
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Pretty much a geologist, just a lot shittier and less educated then a normal one.
Holy shit, did you hear that Rickโs backup plan is to become a rock scientist?!