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Typically used by African American teenagers in the late 90's. It is slang for "gross" or "that's some sick shit!"
Martel - "Yeah nigga, i was at da party last night and der was hair all up in Shelonda's arm pits 'n shit!"

Darnel - "Daaaaaym nigga, dats bilky!"
by Hidrolyx68 December 16, 2004
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