Top definition
Someone that is on top of everything that's mainstream. This person knows about everything that is new and is quick to jump to anything that is new. A mainstream junkie can be good or bad.

The fake ones are the followers only doing it because the real ones (leaders) are doing it.
Wow, last year he liked Pop music, now he's on 50 cent's groan. What a Mainstream Junkie.

Did you hear that new Travis Porter. That shit is so dope and new. It's changing the way I think about certain things. Those guys are some Mainstream Junkies
by They Lazy Genius November 04, 2009
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