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Adjetive used to describe either a band, celebrity, or person who often describes itself as "alternative", but usually watch MTV and go shopping at American Eagle Outfitters.

Comes from the next equation:
Mainstream + Alternative = Maltstream
Radiohead, Muse, Phoenix, and Vampire Weekend are so maltstream, you better listen to some GIRLS album
by alaskaneyes March 04, 2010
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