Ending a case that electrified punctuation pedants, grammar goons and comma connoisseurs, Oakhurst Dairy settled an overtime dispute with its drivers that hinged entirely on the lack of an Oxford comma in state law.
For it. Its lack of use in a union contract was a factor in a court ruling some years back. That's when it went from pedantry to real-world consequence for me. Something was ruled similar to A and B rather than A or B.