Shrek The Third Easter Egg - Monty Python Reference

I was watching Shrek the Third and I noticed something fun. When Prince Charming is narrating at the beginning of the movie, watch until the camera zooms out. You will see that what sounded like a horse galloping is really a guy (the scene is dark for me, hard to say if it's him), banging two halves of a coconut together. This is a reference to the classic Monty Python and the Holy Grail joke.