David Been There Done That's definitions

Bull Fruit

Prison rapist who preys on "fish" (new prisoners) and other, weaker male inmates. The bull fruit does not regard himself as homosexual, rather, as a sort of leader figure who engages in sex with other men only because women are unavailable to him, or as a display of power. Certinly the bull fruit limits his sexual encounters to only those of his choosing, and is always the "driving force" in the sexual exchange.

He was only in prison for 3 days before a bull fruit tore out his ass in the shower.

by David Been There Done That September 8, 2006