Milly Molly, Aunt Maude Is an Alien, S2 E9

Milly and Molly are tired of Humphreys teasing, so they play a trick on him. They convince him that Aunt Maude is an alien from outer space, set on the destruction of Earth Their trick is funny at first as Humphrey makes a fool of himself, but the trick quickly gets out of control and Milly and Molly soon regret their actions.