2 definitions by JeromesNiece

Best New Music, referencing the designation Pitchfork gives to new albums and singles they deem the best (usually 8.0+ out of 10).
holy shit this new Lil B is based as fuck 9.6 BNM
by JeromesNiece November 14, 2013
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High as fuck.

May be pronounced "Hee-yaff" for purposes of concealment when among unfavorable parties.
Bro I was hiaf last night after hittin' Derek's bong.
by JeromesNiece July 2, 2013
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