Being a part of the gold club means that one is very well-endowed. It comes from wearing magnum XL's which are in a gold wrapper.
Bro1: Yo dude i saw that gold wrapper in your trash, I didn't know my best buddy was part of the gold club too!
Bro2: No way you too!? Buddy, the ladies love it.
Bro2: No way you too!? Buddy, the ladies love it.
by Barneazy February 2, 2014