1 definition by O Dogg!

A male partner in a non-publicized, non-marital romantic relationship with either a woman or a man. "NBF" for short.
1. Damn, Nikki! Not another NBF, hooka! That poor bastard...

2. He's called my "non boyfriend" because I just use him for sex. I'll tire of him faster than Omar tires of his ho's. Ha! Ha! Ha! Just kidding...
by O Dogg! August 23, 2007
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