Cockfrown is used to describe a girl that has absolutely zero appealing assets. A girl that is ugly, but has at least one or more attractive assets, does not qualify for cockfrown status. Also, any appealing asset that is not visible cannot mitigate a girl's cockfrown status. The converse of the term, applied to girls who have only attractive assets, is a cocksmile. The terms vaginafrown and vaginasmile can be used by women to describe men.
A girl with a disgusting face and ass but a nice rack is not a cockfrown; a girl that has a gross face, ass, rack, and everything else disgusting, is a cockfrown. The term is used as follows: she is a cockfrown.