a reference to a girl that is probably very pretty, but you don't like her, or she is very ugly and only you think that
it can also man a girl with no standards or low quality
"Hey Joey, whats up?"
Nothing much Jake. Did you see Trisha today? Oh my GOD she was looking fine as everr!"
"What? She's nothing dude. That chick is just some salt mackerel."
"You only say that because she doesn't like you."
"I told you not to bring that up man"