The Cartridge Family

After witnessing a riot, Homer decides to buy a gun and after taking possession of the weapon, he demonstrates how to use it in a shockingly irresponsible way. Marge and Lisa are horrified, so to convince them that guns are great Homer takes the family to an NRA meeting, where he becomes a lifetime member. Marge is still really angry, so Homer agrees to get rid of the gun, but later Bart and Milhouse find it in the fridge.