The Norwegian-born citizens of Ogdenville migrate to Springfield after their tainted barley crop (which was put into Krusty Burger's latest sandwich) causes an economic collapse.
- Beyond the Impossible: A Krusty Burger is somehow so unhealthy that its worse for you than a 'double' Krusty Burger, and thats just the exact same sandwich with an extra patty on it.
- Big Eater: Homer, as usual, who puts away twelve Mother Nature burgers at Krusty Burger. Too bad for him they turned out to be tainted. He even asks himself why he ate so many of the burgers when rushing to vomit.
- Doomed Hometown: Ogdenville
- Is This Thing Still On?: If at least the farmer giving the interview minded the trope.
- Malaproper: At the town meeting, Homer confesses to "xylophobia" concerning the Ogdenvillians. Lisa tells him he means "xenophobia", because "xylophobia" is the fear of xylophonesnote . Homer counters that he's also afraid of xylophones (because of the Xylophones for Walking Bones trope). Mayor Quimby decides to ban the Ogdenvillians and xylophones.
- Never My Fault: Bart tells his mother that the reason his arm got dislocated was because some kids from Ogdenville dared him to perform a risky skateboarding move, despite the fact that the incident was a result of him trying to show off in front of the newcomers. Homer also blames the Ogden's liquor for costing him his job.
- Oh, Crap!: Homer when he finally realises he has food poisoning and is about to be sick because the Mother Nature burgers were tainted. Then again when he vomits into Lisa's saxophone and can't get his mouth off the end.
- Overpopulation Crisis: When the Ogdenvillians came to Springfield they were welcomed with open arms, however, hospitals were soon being overcrowded and Springfielders were losing their jobs.
- Rule of Three: Two in quick succession. Homer's stomach rumbles three times before he realises he has food poisoning. He then tries to find a bathroom three times, only to find all three occupied (Marge in the downstairs bathroom, Bart in the upstairs bathroom, and Lisa in Homer and Marge's en suite). So he decides to vomit into Lisa's saxophone instead.
- Take That!: Its obvious that the episode is a take on America's immigration issues.