The Simpsons: The Cartridge Family / Season: 9 / Episode: 5 (5F01) (1997)

After a large soccer riot leads to an extended period of mob rule throughout Springfield, Homer decides to forgo an expensive security system in favor of a gun. As Marge disapproves of a gun in the house, Homer takes her to an NRA meeting to sell her on the concept. Marge's objections continue, finally forcing Homer to agree to get rid of the weapon. Unfortunately, Bart and Milhouse later discover it concealed in the refrigerator. Infuriated and frightened, Marge takes the kids and leaves Homer. With nothing but his gun and his indignation for company, Homer hosts an NRA meeting in his empty house, only to be kicked out of the group when the gun-nuts themselves acknowledge his reckless and irresponsible treatment of firearms. Thusly humbled, Homer seeks out his family to admit his mistake.