S10E20: The Old Man and the 'C' Student

In "Simpsonlar - S10E20," Homer decides to buy a gun for protection but quickly gets carried away with his new purchase, treating it more like a toy than a serious weapon. Marge, understandably concerned about safety, makes him promise to get rid of it. But this is Homer we're talking about, so he hides it instead. Marge eventually discovers the gun and is furious, leading her to take the kids and leave Homer. While she's gone, Homer realizes that owning the gun isn't worth losing his family over, and he decides to get rid of it once and for all. In a twist of fate, during a town meeting about gun control, Homer manages to save Mayor Quimby from an assassin using the very gun he promised to ditch. This act of heroism helps him reconcile with Marge, who returns with the kids. The episode wraps up with Homer reluctantly giving up the gun for good, having learned his lesson the hard way.