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The bass vibrations of a nigger song from an ostentatious car stereo system. The rest of the song cannot be heard, but the bass alerts nearby white people, whether in their cars or at home, that a nigger is in the vicinity.

Also works for wiggers.
"Honey, why are the windows shaking?"
"Uh oh, it's a nigger alarm, better load the shotgun."
by Murry D. November 05, 2007
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2
An alarm at alerts you when there's a nigger in the area.
No one: ...

Nigger Alarm: Nigger Warning, Nigger Warning, Nigger Warning.
by thedickwaddle July 30, 2019
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