There are many terrible things that can befall you at a music festival. You could embarrass yourself on the dancefloor.
You could become "overstimulated", and end up like this guy.
Or, worst of all, you could end up like "poo girl" here, immortalised by The Sun.
I've experienced a few festival disasters myself. I once went to a festival called Zoo Thousand, which backed onto a zoo. I visited said zoo, where a silverback gorilla threw a rock at my head. I was quite miffed.
Here are a few more calamitous music festival experiences.