This page contains trivia for "Probably". Remember, trivia must be factual, provable, and it is always best to cite your source for not-so-obvious trivia. If you would like to dispute a trivia point, please discuss it in the article comments.
This is the last South Park episode where the boys are in 3rd grade.
During the "previously on South Park recap at the beginning of the episode, a reference is made to the Happy Days episode where Fonzie jumped the shark. Unlike the real Happy Days episode, Fonzie is brutally killed by the Shark.
The repeated line throughout this episode, "Yeah, well, where was I going to go? Detroit?" was from the film Kentucky Fried Movie.
The organist for the children's church is Schroeder from the Peanuts comics.
God claims he's a Buddhist.
The way Cartman acts in his church is very similar to how infamous televangelist Peter Popoff acts, as seen on his nationally-aired infomercials.
The planned church building was to be built with crystal walls. This could be a reference to the Crystal Cathedral in Garden Grove, California. The walls and ceiling of the Crystal Cathedral consist entirely of large panels of glass.
Kenny technically 'died' the previous episode, after being struck down by a bus on its way to Mexico. As a result, he is already considered dead when this episode begins, although in truth, he is actually still alive in Mexico. However, Kenny's death is re-shown in the episode recap.
The hidden visitor is seen on the roof of Cartman's new church building, on the right.
During the shot showing the crowd outside the church, many characters, including Craig and Token, are duplicated.