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a. A person or group of people who's living conditions are so disgusting, totally by their own choice, that their living space appears to outsiders as if it is were possibly a twisted experiment on the fringes of science studying the degree of filth in which one can survive. This leads one to the conclusion that these people must then be highly specialized researchers, Dirtballologists. b. Someone who's self esteem is so low that they choose to spend most of their free time hanging with others who's actions are usually so despicable and/or untrustworthy that they are commonly referred to as Dirtball's or Dirtbag's.
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