The Simpsons Treehouse of Horror Episode 23 The Greatest Story Ever Holed / Un-normal Activity / Bart & Homer's Excellent Adventure Episode Title:The Greatest Story Ever Holed / Un-normal Activity / Bart and Homer's Excellent AdventureEpisode Description:The citizens of Springfield gather to witness the activation of the Springfield Particle Accelerator; they originally wanted to use the money to build a new baseball stadium, but Lisa convinced them otherwise. Professor Frink activates the machine and it works, but nothing exciting happens, and everyone blames Lisa for her suggestion. When everyone is gone, two particles collide with each other and create a small black hole which floats off. Lisa finds it, and after it sucks up Ralph and Nelson, she takes it home so that it will not cause any more trouble. The Simpsons put it in the basement and Lisa warns them not to throw anything in it or otherwise it will grow bigger. Despite the warning, Homer, Bart and Marge use it as a trash disposal, with Santa's Little Helper using it off-camera to get rid of Snowball II, and Homer even opens a business allowing people to throw their junk into it. The black hole becomes huge and consumes everything in sight. The only person who is not sucked in is Maggie, whose pacifier flies into the black hole, inexplicably stopping it. Meanwhile, all of Springfield has been warped to an alternate universe, where aliens worship their trash.