A male friend who you would never in a million years consider dating, fantasize sexually about of ever contemplate physical interaction with; however, to the public, you are in a constant state of flirt with him.
Boyfriend: "Why were you sitting on his lap and holding his hand and whispering in his ear all night?"
Girlfriend: "Relax, babe. He's like my gay brother."
by FrustratedChick August 17, 2011
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April 25th, The day of the year where you celebrate your gay brother(s) and brother-in-law(s)
Mom: are you going to wish your brother a happy National Gay Brother day? It was difficult for him to come out so we should celebrate for him.

Me: Yes I will wish him a happy National Gay Brother Day
by Queers-R-Us April 25, 2022
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A guy who wants to get into a chickas pants, but who continually thinks that the best way to do this is to be their friend. They are often short, meek, not very handsome. Until they do something different they will always be stuck on the *friends* ladder.
Tim is so pathetic, there he goes once again trying to get into his new love-interest's pants by being her gay little brother.
by OA&T January 23, 2007
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A stoned little ginger who is very good at not passing exams. Has a homosexual brother who many fear is passing the "Fag" virus to himself.
Battery Gay Brother Falure Can't Read, you spastic
by Captain OCD October 30, 2022
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