What song is the boat guy singing in the first movie?

The scene where the boat guy gets killed by James, Victoria, and Laurent?

It's after Bella and Jacob talk at La Push, and right before Bella dies internet research on the Quileute legends.

He sings something like "Blah blah blah, sound like a kitty, ME-OW"

I think it's funny, so I'm wondering if it's funny, so I'm wondering if it's a real song, or some kind of improvisation thing.