>I know what the inferred meaning is, but after giving a
>presentation on Gender, Masculinity, and Sexuality to a room
>full of grown men, my question is valid. The Term Man Up can
>mean many things, some positive, but most often it's said in a
>negative context to infer that a man/ male is not being or
>living up to a stereotype of macho or machismo.

dealing with young Black men. Because psychologically so many young Black males see masculinity as physical dominance and stunted emotional growth.