The Simpsons Treehouse of Horror Episode 18 E.T., Go Home / Mr. & Mrs. Simpson / Heck House >Bart (dressed as Frankenstein's monster), Lisa (dressed as a witch), Milhouse (dressed as an astronaut) and Nelson (dressed as a hobo) become frustrated when Agnes Skinner refuses to give them candy on Halloween night and instead spits into Milhouse's plastic pumpkin full of candy. Deciding that pranks are more fun than candy, they begin to focus on the 'trick' part of "trick-or-treat," and begin to play tricks on some of the town's population. Soon, however, their pranks shift into vandalism (and even thievery when they tie up Lenny and steal his TV), and their victims gather at the Simpson house to complain...