Rocks-paper-scissors.
Those without an social interaction other then a TV believe it is the process of kicking someone in the nuts, due to some episodes of South Park, in which Cartman tricks people into getting kicked in the nuts. The people who believe this act embodies the phrase are not only sadly mistaken, but are naive and childish to have believed a cartoon above life experience.
When walking out to a car before a going somewhere, one might shout: "Shot gun! No rank, no ro, no nothing." Thus designating that neither seniority, nor 'ro sham bo', nor anything else can squander their claim to the front passenger seat.
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