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E.A.R.L., short for Electronic Automatic Robotic Lighthouse, is a system that controls an automated lighthouse in Springfield.

Homer had had a fight with Marge and was wandering through Springfield in search of his soulmate when he happened to look at the lighthouse. It occurred to him that the lighthouse keeper had to be the loneliest guy in the world, so he ran to the lighthouse. When he got there, he saw the sign on the door reading "This lighthouse operated by EARL". Taking that to mean the name of the lighthouse keeper, Homer eagerly rushed in and shouted, "Here I come, buddy! No more loneliness for Homer and Earl!"

Homer was bewildered, however, to find that there was no human being inside, but an electronic control panel with a display reading "E.A.R.L. Electronic Automatic Robotic Lighthouse". When he realized that "Earl" was actually a machine, he got angry...