A male who lets a female (most likely his girlfriend or wife) walk all over him. Once this man is labeled a fink he may again be referred to as a fink when anyone treats him disrespectfully and he does nothing.
Glenn: My wife no longer wears her wedding ring, doesn't sleep in the same bed as me, and degrades me in front of my children.
Mike: Why would you let her do that?
Glenn: Because I love her.
Mike: WOW! You're a FINK...