A small boy asked his grandfather, "Gramps, where do our names come from?"
His grandfather answered, "it is a tradition in our family that a child is named after the first thing his or her mother sees when she looks outside after the birth. For example When your sister Stormy was born your mother saw a powerful thunderstorm. Your uncle Hunter's mother saw a group of deer hunters heading across the field. Your cousin Autumn's mother saw the forest in it's beautiful fall colours. Why do you ask about this, Two Dogs Fucking?"
The version I heard was that the children's names were based on a significant event associated with their conception, and the child's name was "Broken Rubber".