Brokeback mountain syndrome is when someone thinks all cowboys are gay ever since the movie brokeback mountain. even though most cowboys are anti homosexuals.
guy 1:haha look at that guy in the cowboy hat. what a queer.

cowboy: "walks up and decks guy 1 in face"

guy 1: shit sorry man i just got caught up in brokeback mountain syndrome.
by cowboy up 1970 February 22, 2011
Get the Brokeback mountain syndrome mug.