One Step Remembered

Perhaps my father's best story involves the stepping on of some guy's foot while they were fighting.  My father, as he tells it, did not want to fight the guy, but the latter persisted and when it was apparent that no resolution could be found, my father stepped on the guy's foot, punched him in the face, then, when the guy tried to step back-and he couldn't-my father punched him again. Knocked that piss-ant out cold.  He hasn't fought since, or so he says, and to this day none of us knows if that famous step was an accident or an ingenious piece of street-fighting savvy.  I used to think it mattered, but I've stopped wondering.  He knocked that piss-ant out.  My father did that.