What's the weirdest reason someone flaked on your birthday party?

I host a birthday dessert party every year. It's a way for me to see all my friends at once and for them to have fun. It's more about them than me. It's a dessert pot luck. Everyone's required to bring full dessert. We end up with a ridiculous display of like 40 plus desserts. And for everyone there it's all you can eat. It's silly and over the top but they all seem to have a fun time. (I keep the leftovers)

But I've had a few weird weird responses to the party...

1) One friend came to the party with 6 cupcakes... but he got to the door and decided having a potluck and requiring people to bring a dessert to my bday was wrong and turned around and left then sent me a picture of he cupcakes with 2 missing that he ate and told me why he didn't come.

2) another friend who was coming for weeks and weeks had planned to be there messages me hours before saying he accidentally bought movie tickets and couldnt come. At first I was like OK... then I was thinking and like that made no sense at all. I find this one to be hilarious and me an my friends now use it as an excuse when we can't go to things as a joke.