A heterosexual male or female that is dating a homosexual member of the opposite sex. Typically, the homosexual partner in the relationship is a closet case.

Comes from such terms as "bull-dyke", "bull-queer", etc.
Poor, Frank... Doesn't even realize he's been fighting a bull.
by pseudonymx March 31, 2005
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When the Guy starts waving his Penis in front of the girls face, tempting her with it, until she charges forward and he slaps her with it, yelling "Crikey!"
Paul: So I was giving Jenny the Australian Bull Fighter, but then she got pissed off and bitch slapped me.
Matt: Dude, you gotta take control of your bitch.
by Sexpuns101 June 14, 2009
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