Butters's pants were green earlier, but at the end of the episode they are brown.
Right after Stan's parents give the boys their second mission (getting the tape back), it cuts to a clip of the Stotch house with the upper right-hand room's light on, signifying that room is occupied. The next scene is Butters is in that room watching the tape. There are stairs behind him. Wouldn't those lead to the attic? His parents walked down and then back up those stairs earlier in the episode.
When Randy and Sharon inform Butter's parents that Butters might be watching the porno movie, they are seen in their regular clothing. When they discuss it with Cartman and Kyle's parents that they boys have the porno movie, Randy and Sharon are in their pajamas.
One member of the "army of 6th graders" looks exactly like Scott Tenorman, from the episode "Scott Tenorman Must Die." In that episode, Tenorman was a 9th grader.
At the end of the episode, Butter's father; Chris, asks where is Butters? But why would he ask that? The last time they saw Butters, he was at their house and then they left. They would still assume Butters is home.
When the boys are on their way to drop off the video they walk through Kenosha Pass. The sign there says its elevation is 9,800 ft. Kenosha Pass's elevation though is actually listed at 10,001 ft. Guess somebody didn't do their research.
Stan: This is great, we're in the middle of nowhere and nobody knows what direction the video store is in.
Butters: The Butters knows.
Kyle: Oh brother.
Butters: The video store, yes. Not far from here. We can show you wheres it is.
Butters: First, just let Butters see the precious.
Kyle: NO Butters, look what it has done to you. It's made you even lamer than before.
Cartman: If that was possible.
(The boys knock on Butters front door and Chris opens it up)
Chris: Oh, hello boys.
Stan: My father has asked that we bring you this copy of Lord of the Rings.
Chris: Well thank you very much, kind heroes.
Cartman: Perhaps a reward is in order. Gold! Frankenstein cents!
Chris: Oh, but you are noble heroes. We know our thanks is enough. (Closes the door)
Cartman: Man, that's crap.
Butters: My movie! My awesome cool movie! (dramatically) My precious.
(the boys are fleeing from the 6th graders)
Stan: Jimmy didn't stop them.
Kyle: They're going to take the Lord of the Rings from us.
Cartman: Quick cross the river. 6th graders can't stand water.
Craig: What!? That's stupid.
Cartman: I am a high ranking white wizard, Craig. And I say 6th graders are opposed to water!
Craig: Whatever, I'm going back to play with the Harry Potter kids.
Kindergarten Kid: Me too.
Cartman: Go ahead and play Harry Butthole Pussy Potter!
Gerald: "Back Door Sluts 9" makes "Crotch Capers 4" look like "Naughty Nurses 2"!
Sheila: How do you know about it?
Gerald: Uh, I read about it in People.
Cartman: Thank you, High Elf of Paragon.
Clyde: Faragon, asshole! (closes door)
Cartman: Clyde's a dick.
(Token comes out after seeing the porno)
Token: I'm not playing anymore.
Stan: Uh, well wait, what'd you see?
Token: I don't know, I don't wanna know. I'm out.
Cartman: And so the party journeyed onward. The great wizard, the skillful ranger, and the covetous Jew.
Kyle: I'm a paladin, Cartman!
Cartman: Jews can't be paladins!
Craig: Only the six of us are to go?
Stan: No no, there's seven of us. Kenny's soul is still trapped in Cartman's body, remember?
Cartman: Yeah, stupid.
Kenny: (talking from Cartman) Yeah. Luckily, Cartman's body is big enough for the both of us.
Cartman: Shut up, Kenny.
Stan: I will take it! I will walk to the video store.
Clyde: It is too far and too dangerous to go alone. Take with you the wizard, the dwarf, the warrior, the cleric, and the Jew.
Randy: Alright, now, now listen, kids. There's some things we need to put into context for you. You see, a man puts his penis into a woman's vagina for both love and pleasure. But sometimes the woman lays on top of the man facing the other way so that they can put each other's genitals in their mouths. Uh, this is called "sixty-nining" and it's normal.
Sharon: See boys, a woman is sensitive in her vagina and it feels good to have a man's penis inside of it.
Sheila: That's right, but sometimes a woman chooses to use other things. Telephones, staplers, magazines. It's because the nerve endings in the vagina are so sensitive, it's like a fun tickle.
Gerald: Now, onto double penetration, boys. You see, sometimes when a woman has sex with more than one man, each man makes love to a different orifice.
Randy: That's right. It's something adults can do with really good friends in a comfortable setting.
Sheila: It's also important that you understand why some people choose to urinate on each other.
Randy: Going #1 or #2 on your lover is something people might do, but you must make sure your partner is okay with it before you start doing it.
Gerald: Okay boys. Do you have any questions?
Randy: Jimmy! Jimmy! Where did the boys go with the porno tape?
Jimmy: They're taking it to the vi - the vi - the vi -
Butters' Dad: Come on Jimmy, we don't have a lot of time.
Jimmy: They took it back to the video s - the video s...
Randy: The video sandwich?
Butters' Dad: The video stockyard.
Randy: What's a video stockyard, Jimmy?
Jimmy: No, the video st - the video st -
Butters' Dad: Staples. They went to the video staples. Where's that, Jimmy?
Jimmy: No, you retards! The video store!
Parents: The video store!
Kyle: You guys, somebody is following us.
Cartman: It's Butters.
Cartman: Yes. He's been following us for like two hours.
Kyle: Hey, what are you guys doing?
Boy: We're playing Harry Potter.
Cartman: Ha! Fags!
Kyle: Good job, Wizard Fatass! Now we're totally lost.
Cartman: We're not lost, Jewgar of Jewlingrad, we just don't know where we are! (Kenny talks through Cartman) That's what lost means, stupid! (normal) Kenny, shut your God damned mouth!
(Jimmy trying to speak)
Jimmy: You shall not pu… You shall not pu…
Randy: Yes, uh, you see, Token, that was called a pornographic film. Uh, it shows adult men and adult women having sexual intercourse. Well, you see, when a, when a man and a woman fall in love, the the man puts his penis in the woman's vagina. It's called love-making, and it's part of being in love.
Token: And when the woman has four penises in her at the same time, then stands over the men and pees on them, is that part of being in love too? Five midgets, spanking a man covered in Thousand Island dressing. Is that making love?
Kyle: There are four of us! Kenny's soul remains in Cartman's body!
Kyle: Butters, we said you can't watch it, we have a quest.
Butters: Then, Then let me go with you.
Kyle: Ok, Fine Butters! But if you're gonna hang out with us you have to play like Lord of the Rings.
Butters: Ah! Ok!
(Butters starts humping Kyle)
Kyle: Butters what the hell are you doing?
Butters: We're playing Lord of the Rings.
(Butters keeps on humping Kyle)
Kyle: GET THE HELL OFF OF ME! YOU'RE A FREAK BUTTERS YOU CAN'T PLAY WITH US.
Butters: Let me have the tape!
Stan: No, we have to return it.
Adult film star Evan Stone is briefly shown on the TV during the porno.
If you look closely, you can see one of the middle school kids is Scott Tenorman.
This episode is an animated parody of "The Lord of the Rings." Complete with the boys as the Ring-bearer's party, Butters as Gollum (with the porno as his 'Precious') and 6th graders as the Black riders.
Wild Wild West:
Next to the poster in the video store window for Guys in Black Suits mentioned previoiusly, there is another poster for a movie called Nutty, Nutty West, a reference to the Will Smith-Kevin Kline movie Wild, Wild West
Lord Of The Rings:
When Stan volunteers to carry the tape, Cartman (the wizard) closes his eyes sorrowfully. This is directly inspired by the live-action film of "Fellowship of the Ring", when Frodo volunteers to carry the ring and we see a reaction shot from Gandalf.
Return of the King:
Butters going down the video chute and clutching the porno is like Gollum in Lord Of The Rings: The Return of The King getting flung into the flames of Mount Doom and finally getting "his precious" (the ring).
Death Of Lurtz:
Jimmy getting run over by the 6th graders is like the character Boromir in "The Lord of the Rings: The Fellowship of the Ring" getting shot by three arrows, fired by Lurtz, and dying only after Aragorn had killed Lurtz. Jimmy attempting to say 'you shall not pass' is taken from the showdown between Gandalf and the Balrog.
Parents: A man puts his penis into a woman's vagina for both love and pleasure...
The kids' parents explain "ways of sex" just like the father in Trey and Matt's ill fated Shockwave.com series "Princess" (episode 2).
Men in Black:
The poster saying "Men In Darker Suits" at the Two Towers Video Store was referring to the Men in Black movies starring Will Smith, and Tommy Lee Jones.