"... to voice his disapproval of unfavorable rulings by the referee in his son’s games. With regard to his colleagues, he used somewhat milder language, though it was still emphatic. He often described the harsh consequences of his strict enforcement of a rule that seemed inequitable to some of us as 'tough tacos.' Bill had a good sense of humor, but unlike some of his colleagues, he seldom displayed it at oral arguments."
Writes retired Supreme Court Justice John Paul Stevens in his new book "Five Chiefs: A Supreme Court Memoir," which I've been reading.