Dim Mak
DVD Movie Guide's Colin Jacobson wrote: "Mean Homer equals Funny Homer, so 'When Flanders Failed' presents an above average show. He seems unusually crude here, which makes him amusing. The subplot with Bart and his karate class also adds good material, especially when he threatens to turn the 'Touch of Death' on Lisa. Another sappy finish slightly mars this one, but it remains generally solid." Kimberly Potts of AOL named it tenth best episode of the show and commented: "Schadenfreude is the theme of this tight episode about Homer's joy at the failure of Flanders' Leftorium store. There are few times Homer is more shamelessly smug than he was while imitating Flanders and using Ned's yard sale grill, and we haven't even mentioned Bart's 'Touch of Death' subplot." "Winston-Salem Journal"'s Tim Clodfelter called it an "outstanding" episode.