- Not to be confused with South Park Mental Home.
The South Park Mental House is a mental hospital located in South Park. Kyle Broflovski was committed here in the Season One episode "Mr. Hankey, the Christmas Poo". where the boys commit Kyle Broflovski, believing he is a fecophiliac for believing in the existence of Mr. Hankey.
In the episode, Kyle makes several unsuccessful attempts to make people believe in Mr. Hankey. He is sent to Mr. Mackey, who prescribes him Prozac. However, Mr. Hankey shows up in Mr. Mackey's coffee, only visible by Kyle. Mr. Mackey discovers poo in his coffee. At his wit's end, he requests the boys to commit Kyle to South Park Mental House, which they do. Eventually, Mr. Hankey reveals himself to the townspeople at the Christmas play. They return to the hospital while singing a song and release Kyle.
The South Park Mental House is a blue, rectangular building with many brown-framed windows across it, as well as fine brown doors. Inside, the building features a lobby and at least one padded room for the patients.
- The two burly men who put Kyle in a straightjacket and bring him into the hospital later appear in the unpublished South Park game.