Air date: June 1, 2011
Butters is misdiagnosed with multiple personality disorder, while Mr. Lu Kim takes on a sushi restaurant that opens next door to City Wok.
"City Sushi" contains examples of:
- Bread, Eggs, Milk, Squick: Butters decides to discard his extra identities noting No more Postman Butters, no more Inspector Butters, no more Porn Star Butters
- Driven to Suicide: Takayama jumps off a tower to his death out of shame after mistaking a Caucasian man for a Chinese man.
- Interchangeable Asian Cultures: A Japanese sushi restaurant opens next door to City Wok. The residents of the town refer to both restaurants as "Chinese" and to the area where both restaurants are situated as "Little Tokyo" much to the frustration of the owners.
- Japanese Ranguage: Mr. Lu Kim and the City Sushi owner each complain about not being able to understand the accent of the other, although it's not clear how much of it is them just trying to insult each other on purpose.
- Meaningful Name: Butters is diagnosed with multiple personality disorder by the psychiatrist Dr. Janus, named for the two-faced Roman god of transitions.
- Never My Fault: Stephen doesn't know what is wrong with his son, but he know it isn't him because he believes his parenting skills are awesome.
- Psycho Psychologist: The psychiatrist turns out to be both insane and abusive to Butters.
- Room Full of Crazy: Butters finds a room covered with pictures of the sushi chef (Tuong Lu Kim's "enemy") with the word "Kill" scrawled in red paint over them.
- Split-Personality Takeover: The police allow Dr. Janus to keep on thinking he's Lu Kim, since Lu Kim owns the only Asian restaurant in town.
- Status Quo Is God: The police wonder if the town really needs another therapist and decide to just let him keep believing he's a Chinese man.
- Stop Being Stereotypical: The City Sushi owner commits ritual suicide out of his great shame for being naive and being fooled into thinking a Caucasian person pretending to be Chinese was actually Chinese so easily. As he's falling to his death, he berates himself for being stereotypical.
- Wham Shot: Butters seeing the wall in Dr. Janus' room covered with articles on City Sushi and vandalism of anti-Japanese rhetoric, signifying that "the mean man" personality inside of Janus that was said to be mysteriously getting stronger and more dominant lately is in fact Lu Kim, which gets revealed immediately after.