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© 1999-2026 Urban Dictionary ®
Definitions by Joe12112
Mainriver
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Somebody who is so
mainstream
they need defining by a new
word
.
Calling them
mainstream
is out of order to mainstream kids.
Oh dear
, he
likes
the Kooks and wears
pumps
. He is so mainriver.
Mainriver
by
Joe12112
March 3, 2009
0
0
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