Not much, another girl (who I guess is part of the cast) participate in the mud race, but she got just a little dirty, not really messy. And Debra is not even part of the scene.
Yeah, I wasn't particularly surprised. Of course, at least in regards to the weakness of the coverage, it was very much like a real mud race/football/volleyball/etc., especially the ones near me, which chronically substitute dirty water for actual mud...