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1.
A nigga or a bitch that is down aka ride or die for what ever, when ever, how ever, for their significant other/lover or friends/potnas. When times hit rock bottom or don't go as planned they are down and willing to stick it out and make it through the rain.
Terrell was a down bottom nigga but I took him for granted.
by Moniee July 16, 2008
 
2.
the sunset valley level on the famous game Fun Run
down bottom

1. Whoop dat ass down bottom brahh
by Finesse A January 16, 2013