1 definition by Goldenboy62
1. Any outsider or member of a sub culture that is willing to do anything to be accepted and be identified as mainstream.
2. A member of a sub culture whose natural likes lean toward mainstream tastes.
Dude, I saw Tyrone, the other day at the Ratchet Club chatting up some debutantes. I didn't know he was a mainstreamer.
by Goldenboy62 Jan 27, 2011 add a video