For the first time, Stan has pockets in his brown jacket.
When Gary introduces his sisters to Stan, he says their names are Jenny and Amanda. Later on when they are laughing (after Mark's acting performance), he says, "That's a great story, Sarah". We never meet a Sarah, and it's not the mom because Gary's dad calls her Tarren. So, who's Sarah?
The episode seems to suggest that Mormonism was made up by Joseph Smith. However, previous episodes have shown that Mormonism is the one true religion, since only Mormons go to heaven.
In this one Stan mentions he's never heard of Joseph Smith; however, in the "Super Best Friends" episode he met Joseph Smith when Jesus did the roll call.
Kyle: Dude, that new kid is such a douche!
Cartman:Yeah. Somebody need's to put him in him place!
Butters: He's a peckerface, that's what he is!
Cartman: Go kick his ass, Stan.
Clyde: Yeah, go kick his ass.
Stan:Well, maybe he won't fight.
Cartman:Will he bleed? That's all we care about.
Kyle:Come on, dude, somebody needs to wipe that f**kin' smirk off his face!
Craig: Yeah, little bitch!
Stan: All right, I'm gonna go kick his ass. (leaves)
Stan: It's just that the Book of Mormon says a lot of strange stuff, like that Adam and Eve lived in Jackson County, Missouri.
Cartman: You were supposed to kick his ass, not lick his butthole!
Mr. Garrison: Well, looks like I don't have a class full of retards anymore, doesn't it children?
Gary Harrison: Hey, my name is Gary.
Cartman: Hi! My name is 'Youra'…You're a fag.
Stan: (screaming) AND STOP BEING SO HAPPY! IT'S NOT NORMAL!
Lucy Harris: Did you ever think he (Joseph Smith) was just making this up?
Chorus: Lucy Harris-smart-smart-smart-smart. Martin Harris-dum-dum-dum-dumb!
Gary: (to Stan) Look, maybe us Mormons do believe in crazy stories that make absolutely no sense, and maybe Joseph Smith did make it all up, but I have a great life and a great family, and I have the Book of Mormon to thank for that. The truth is, I don't care if Joseph Smith made it all up, because what the church teaches now is loving your family, being nice and helping people. And even though people in this town might think that's stupid, I still choose to believe in it. All I ever did was try to be your friend, Stan, but you're so high and mighty you couldn't look past my religion and just be my friend back. You've got a lot of growing up to do, buddy. Suck my balls. (walks away)
Cartman: Damn, that kid is cool, huh?
Stan: I mean, how come we never have a night where we don't watch any TV and we just do stuff together and eat and drink?
Randy: We have that, Stan. It's called Friday Night Kegger.
Joseph Smith: I have, in my possession, an ancient book written on gold plates that tells of Jesus Christ's second coming. Here, in America.
Martin Harris: In America? Really? That sounds kind of -
Chorus: Dumb dumb dumb dumb dumb.
Throughout the episode they play the Joseph Smith song saying "...Dum dum dum..." But when the voiceovers say it slowly you actually understand that they are saying "dumb, dumb, dumb!" Matt and Trey obviously did this on purpose because the whole episode is suggesting that Mormon religion is dumb.
Both times the TV is on, the first episode of "That's My Bush!" is playing.
When Gary's family is playing around, his brother is acting out the well-known scene from Shakespeare's 'Hamlet' between Prince Hamlet and Yorick's skull.
The Plates of Gold that Joseph Smith found referenced as the Kinderhook plates: forgeries made on brass plates which contain heiroglyphics which eventually translate out to the book of Mormon, these plates were eventually proven to be fakes.
Gary's family is playing a game called "LIVING," which is essentially a a spoof of the real board game called LIFE where similar situations would happen in the game.