OGBF 

Abbreviated form of "Obligatory Gay Best Friend."
The homosexual male friend that a woman is practically expected to have anymore.

Girl #1: I was having such boy troubles the other week.

Girl #2: Really? What did you do about it?

Girl #1: I talked to Cody of course. He's my OGBF.

Girl #2: God, I need to get one. They're such good listeners.

OGBF by x13supernova13x September 16, 2011

OGBFF 

Opposite gender best friend forever

When an individual has a 2 best friends and one of them is the oppsite gender, the opposite gender best friend is called OGBFF.

When a guy has a guy best friend but also a girl best friend, the girl is called OGBFF. Same for when a girl has a girl best friend but also a guy best friend, the guy is called OGBFF.

A: Are you and Mark together?
B: No! He's my best friend.
A: But, I thought Marrisa was your best friend!
B: She is! Mark is my OGBFF, opposite gender best friend forever!

OGBFF by Evelin A. December 4, 2016