What is Rice at a Wedding? (as related to meetings)
Rice at a Wedding is a term coined by Alison Davis to described a meeting where the topics haven't been curated or put into a sensible order in advance. This makes the meeting feel random and scattered, just like what you get when you throw rice at people.
This is not good practice, whether using real rice or metaphorical rice, unless you're literally at a wedding. Maybe not even then.