I'm sure many of us in the UK are quite familiar with bog snorkelling even if it's not something we follow or care that much about. But that got me thinking about all the odd sports that are familiar only to our area. I've been to the Cooper's Hill Cheese Rolling Festival in Gloucestershire with a uni mate who used to live around there. I had a blast and it was all in good fun, but some participants actually get injured chasing that cheese wheel. It's serious business to some. What are some weird sports you've heard about from around the world?