Best & Worst Experiences with Photographers?

The title is pretty self-explanatory! I am a wedding photographer, and my close circle of friends consists of photographers (primarily wedding photographers). We have tons of stories of best & worst client behavior or nightmare situations happening, and even though I personally work really hard to communicate clearly and set expectations early on with my couples, about once a year there is some type of mayhem/Act of God/bridezilla/or just plain ol' disappointment on my end or the client's.

I would LOVE to know, straight from the "horse's mouth", what experiences of your own stand out to you the most?

Edit: I'm not asking for feedback for my personal use, just some great, humorous/dramatic/awful wedding stories. I've searched a lot on Reddit, but can't find much about photographers unless it's someone asking for advice!