When having intercourse of the doggy-style nature, one whispers into their receivers ear something involving std's, a sexual act with a family member, or some other unwanted atrocity. As the receiver fights or "bucks" to get away, the giver or "rider" holds on for dear life. If they can hold on for eight seconds, they are to release and in triumphant joy exclaim, " I'm the Rodeo Champion!"
Ron: Dude, sarah is super mad at me today.
Ron: Well, last night I had to give'er the rodeo champion when I told her, mid-coitus, that I had syphilis, ha ha.