In the Movie

[Captain of Despair]

Originally Posted by Beanamir of Gondor

I just kind of wish that PJ hadn't had Merry say, "My lady!" at the Muster of the Rohirrim and ruin it all. PJ should totally have let Dernhelm exist, and all of a sudden when Miranda Otto whipped off the helmet and went, "I am no man!" the entire audience except for those who had read the book would be like, Holy orc filth! Dang, dang, dang! That fries me.

You have a very good point. It would have been so great if that had been included in the movie.

Regarding the "feed on his flesh" line, I think that it was added so that the audience would feel more hatred toward the Witchking.