To relieve stress, what little things went wrong at a wedding that now make for hilarious stories?

Hi weddit! Every married couple I spoke to told me to expect at least one thing to go wrong with the wedding day. Usually, they said, these are minor things that they thought they would care about and just didn't when it happened, or things that made for awesome and hilarious stories later on. Some examples:

- A former boss didn't have knives at her wedding because catering failed to tell her knives were not included in the silverware provided. People ate their chicken breasts like cavemen with forks.

- A party bus drove by the church, leaving a doppler effect of salsa music during the ceremony. (This was my wedding and is already our favorite story)

- Bride got food poisoning the day before the wedding and it came out of both ends.

- Catering messed up the place cards, giving all men the surname of their female companion (i.e. Jane Smith and John Doe become Jane and John Smith)

We stress so much about the finer details of our big days. In an effort to relieve some of this stress, what are some things that went wrong at your wedding or one you attended that are now hilarious stories or that simply didn't matter as much as you thought they would?