reaching the number of sexually partners equal to your age. similar to "golden birthday" except given that your age and amount of sexual partners are subject to change, you can have multiple golden fucks in your life time.
I'm 21, and if I sleep with one more person before my brithday, they will be my golden fuck.
I totally dig the guy I met at the bar last night, plus he was my golden fuck. I think I'll call him.