Navy Versus the Night Worm

Navy vs. the Nightworm was an old movie mentioned in Arthur's First Sleepover that the Brain used to be scared of. Arthur and Buster thought that it was a funny movie, but they become scared when the shadow of a bug was on their tent. In a later episode, War of the Worms, Fern successfully fools Brain into thinking that giant worms are indeed real and live in Elwood City, which links back to this movie.