Gravy Wrestling...?

The World Gravy Wrestling Championships have been held at a pub in Lancashire, UK. I was puzzled by this, when I heard about it and ultimately I had to dig a little deeper to unnderstand why jello and mud wrestling aren't enough for these people, they apparently need more!

Here is a video of the spectacle, it appears that they dress up in silly costumes as well, I'm not sure why the costumes are needed, perhaps to make it more ridiculous than wrestling in gravy???

Here is a news piece about the current championships.