Heavy Frigate

A Heavy Frigate is a large girl. Not necessarily fat, just large with a fair bit of meat on her (not tall skinny women). Heavy frigates can be extremely hot, for example, Kim Kardashian

man1: Have you seen Sally from the women's basketball team?
man2: Yeah bro she's hot, I love a good heavy frigate

or

man1: Hey I'm going to a party on the weekend and Sally's going to be there, I think she's hot for it too
man2: Awesome dude, there really is nothing like captaining a heavy frigate