I'm watching that wonderful programme, "CSI" (the original). There's a rodeo story on (I can imagine that 'white boy', who has just discovered the pleasures of CSI, would prefer a bullfight story), and a female bull-owner is discussing the finer points of sperm collection:
"First, you get a teaser - a steer. Bulls go homosexual in captivity."
Suddenly, Oxford and the Catholic priesthood make complete sense.