When an African American male or female urinates on the chest of another human, and it runs down their body like a river.
"OMG Stacey, I finally got to see that black river everyone's talking about."

"Was it worth it?"

"Was completely warm and comforting like everyone said it would be!"
by Big naughty Santa November 14, 2014
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A tiny town in Wisconsin, noted for its complete lack of Taco Bells.
"My family was on vacation in Black River Falls, and that is when my little brother starved to death from taco deprivation."
by Mr. Spock July 20, 2004
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A really cool learning center that every other high school in the Holland Michigan area loves to hate for basically no reason, i mean yeah there are some retarded kids but u will find nerdy 110 pound walking textbooks anywhere if u look hard enough.
"what high school do you go to"

"oh, i go to black river public school"

"fag"
by bitchtitsyndicate March 22, 2009
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