ghostologist 

A douchebag that studies absolutely nothing.

Yo man, did that ghostologist solve your problem?

No, that douchebag didn't find anything.

ghostologist by SuperCrazyNinja November 14, 2013

Ghettologist 

A former gang member who acts as a paid consultant on movies set in the inner city, especially one who embellishes details about violence and depravity.

The producers of "Dangerous Minds" consulted a ghettologist to ensure the accuracy of the film.

Ghettologist by FYCOTT March 18, 2016