To indicate a woman's vagina is of very high quality in terms of tightness, moisture content and of course odour during sex.
The Holy Grail of every heterosexual man: the perfect pussy.
Not to be taken literally - cunts are very rarely golden in colour.
Damn bro, I bet that Milf has a golden cunt!
Shiiit, I need to get me a piece of a golden cunt.
"Quick bartholomew! To the Tower of Shinzegar with the sacred Golden Cunt!"