As the Pickles do some house cleaning, Angelica convices Chuckie and Tommy that the large piles of dust under the furniture are actual "dust bunnies" that come to life and hop around like other bunnies do. - Description from Klasky Csupo
While watching their parents clean the house, the kids begin to fear that they will be attacked by "dust bunnies" after Angelica convinces them that the dust bunnies are "monster bunnies that eat soft, juicy, tender, little babies,"
The episode first aired in Chromadepth 3D, known on Nickelodeon as "3D Nogglevision".
Moral: Don't tell stories that aren't really true with intent to scare your younger siblings or playmates. They can come back to bite you someday.