Basically, people (especially teens and adults) who read, watch or play something that's not really intended for their actual age demographic. One example is Harry Potter which was originally intended for children and adolescents but quickly caught on with adults as well.
Hank the Cowdog was originally written for adults, but became incredibly popular with children. That's one example of the periphery demographic stereotype reversed (the stereotype being that most think that adults always read something originally intended for kids, but now it's kids reading something originally intended for adults).
by CelticEagle February 11, 2019
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demographic parasite (noun) dem· o· graph· ic par· a· site | \ˌde-mə-ˈgra-fik , ˌdē-mə- ˈper-ə-ˌsīt , ˈpa-rə- \

: A person, social group, community, nation, or broad grouping of people having common traditions, institutions, and collective activities and interests that resembles a biological parasite in living off of, being dependent on, or exploiting another social group while giving little or nothing in relation to the dynamic balance of a population especially with regard to density
A community which maintains its level of population without breeding from its inherent genetic stock is a demographic parasite which requires replenishment from other communities to do so.
by American nomad news on YouTube January 24, 2021
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