From the report:
"It was reported, apparently erroneously, that Augusta National had generated a list of phrases, most notably “Dilly, Dilly” – a term of approval made famous by a Bud Light commercial – that, if shouted, would result in immediate and automatic banishment from the grounds.
No one interviewed by Yahoo Sports – a group that ranged from volunteer marshals to full-time security – had seen or been told of any list, although they had heard of the day-old “Dilly, Dilly” legend. These men were heroically willing to risk their jobs to come forward and debunk the story to Yahoo Sports as long as they remained anonymous, because they are not authorized to speak for Augusta National."
Originally, Bryce Ritchie, an editor at the golf publication Bunkered reported the news of the phrase being banned, citing security personnel at the tournament. The Yahoo report contradicts this in pretty plain terms though, quoting one security worker onsite as saying: “There’s no list."