When Xander is ejecting Buffy from the bar, you can see a Florida Gator pennant and a Florida State Seminole pennant on the wall, near the jukebox.
Goof: When Xander chases the "cavemen" out of the bar with the lighter, he closes the door and then makes a motion like he is locking it. When Xander leaves the bar after talking with the bar owner about the beer, he just opens the door without unlocking it.
Nitpick: The beer is called Black Frost, but the beer is clearly a *light* ale.
Nitpick: When the guys change into the cave-dudes, you can see that they're all wearing pants, but when they go outside one of them is wearing shorts. Maybe he stripped down to his boxers?
Nitpick: Right after the opening credits, when they show a shot of outside the campus, you can see Buffy in the bottom left corner of the screen. It is from when first episode of season four when she's outside looking confused (the scene with the colored folders).
Goof: The guy who mixes the potion for the beer uses a spiral condenser to drop it into the vat of Black Frost. Usually one uses such a condenser to cool down a fluid with water. But you can clearly see that it's not connected to any water source.
Prof. Walsh: These are the things we want. Simple things. Comfort,sex, shelter, food. We always want them and we want them all the time. The id doesn't learn; it doesn't grow up. It has the ego telling it what it can't have and it has the superego telling it what it should want. But the id works solely out of the pleasure principle. It wants. Whatever social skills you've learned, however much we've evolved, the pleasure principal is at work in all of us. So, how does this conflict with the ego manifest itself in the psyche? What do we do when we can't have what we want?
Kip: The thing that the modern day pundits fail to realize is that all the socio-economic and psychological problems inherent to modern society can be solved by the judicious application of way too much beer.
Buffy: Want more singing. Want more beer!
Xander: No, I've cut you off.
Buffy: Did it hurt?
Giles: I can't believe you served Buffy that beer.
Xander: I didn't know it was evil.
Giles: You knew it was beer.
Xander: Well, excuse me, Mr. "I spent the 60's in an electric-kool-aid funky-Satan groove."
Giles: It was the early 70's and you should know better.
Willow: I mean, you men! It's all about the sex. Find a woman, drag her to your den. do whatever's necessary, just as long as you get the sex. I tell you, men haven't changed since the dawn of time. (Cavemen walk in with two girls) See!
Buffy: I went to see Xander. Then I saw Parker. Then came... beer.
Willow: And then group sex?
Buffy: Pffft! Gutterface. No! Just lots and lots of beer. It's nice. Foamy... comforting. It's... beer.
Willow: (about Parker) He deserves a torturous and slow death by spider bites. Well, for today we'll just have to throw spitballs at his neck in class.
Willow: "My name is Veruca. I'm in a band." "Oh, I'm Oz. I'm in a band, too. Oh, and this is Willow." "Oh, how fun, a groupie." Groupie! Buff, have you heard of this Veruca chick - dresses like Faith, voice like an albatross?
Buffy: TV is a good thing. Bright colors. Music. Tiny little people.
Willow: What have you done with Buffy?
Buffy: I'm suffering the afterness of a bad night of... badness.
Willow: You didn't. Not with Parker again.
Buffy: No. With four really smart guys.
Willow: Four?? Oh. Ow.
Oz: Hey, you got a table.
Willow: I had to kill a man.
Oz: Well, it's a really good table.
Buffy: If he were tied and gagged, and left in a cave that vampires happen to frequent, it wouldn't really be like I killed him, really.
Buffy: Oh, Riley - so sorry.
Riley: You know, most people go around. I'm not saying you can't tunnel through me, I just think the other way's quicker.
Buffy: In my defense, you do take up a lot of space.
Riley: I do. I'm ungainly.
Buffy: Don't guys sometimes keep the girls they really, really like inside these deep little brain fantasy bubbles where everything's perfect? I mean, they do that, right?
Xander: How's that fugue state coming along?
Buffy: Maybe I'm in his bubble, and then, pretty soon, he's gonna realize that he wants more than just bubble Buffy, and he'll pop me out, and we'll go to dinner and... it could happen, right?
Willow: Buffy, that is my best friend, you need to think about not-Parker. He's no good. There are men - better men -- where in the mind is stronger than the penis.
Xander: Pfft! Nothing can defeat the penis! Too loud. Very unseemly.
Willow: I'm pregnant by my step-brother, who'd rather be with my best friend, and he's left me with no place to live, no food except for this bottle of Wild Turkey which I drank all up. That was me being tanked and friendless for ya.
Xander: Gets my Oscar nod.
Xander: Rough day? (flicks a lighter) Come on, Buff, be a lonely drunk. (flicks a lighter) Rough day?
Buffy: Stop flicking at me.
Xander: Work with me here. I'm finally an essential part of your college-y life. No more looking down on the townie. I'm the new bartender over at the pub. Got my lighter, my rag, my empathy face.
Willow: Aren't you too young to be a bartender?
Xander: Au contraire, mon frere.
Buffy: "Mon frere" means brother.
Xander: Mon girl-frere. Behold. (Xander shows his very fake I.D.)
Willow: I don't believe this is entirely on the up-and-up.
Xander: What gives it away?
Willow: Looking at it.
Cave College Boy: (Xander whips out a lighter to scare away the college boys that have turned into cavemen) Fire bad!...Fire...Fire pretty...
Xander: Fire angry!! (The cavemen yell and grunt and run out of the bar)
Buffy: Buffy strong (pounds chest), Buffy get Beer!
Xander: And was there a lesson in all this? What have we learned about beer?
Buffy: Buffy want beer.
Giles: You... can't have any beer.
Buffy: ... Want BEER!
Xander: Giles, don't make Cave-Slayer angry.
The music video Buffy was watching was Luscious Jackson's video for "Lady Fingers." Jill Cunniff, one of the vocalists for the band, knew Joss Whedon as a child (as reported in an interview with Cunniff in issue #5 of the official BtVS magazine).
The name of Veruca's band is Shy, but the music is actually done by the real band THC.
Poker's Light and Black Frost are not real beers.
This episode received an Emmy nomination for Outstanding Hairstyling for a Series in the 52nd Annual Emmy Awards.
Notice here how Buffy says, "Fire bad,"? A repeat of a line in "Graduation (2)" when Buffy's talking to Giles after the destruction of the High School and the Mayor/Demon about how her brain's mush. "Fire bad, tree pretty," she says.
This episode has an underlying message of the dangers of alcohol, a subject lightly touched upon in several previous episodes. This episode also has the notoriety of ranking amongst many fans least favourite episodes.
Xander: Well excuse me, Mr. 'I spent the sixties in an electric-kool-aid-funky-satan-groove.'
This is most likely a reference to the "electric kool-aid acid tests" of the sixties, which were reportedly staged events where hundreds of volunteers were given Kool-Aid spiked with LSD (i.e. Electric Kool-Aid) to see how it affected them. Electric Kool-Aid is also a cocktail consisting of Amaretto, Midori, Cherry Brandy, Southern Comfort, Triple Sec, sour mix, cranberry juice, and grenadine.
Cave Guy: Well, Thomas Aquinas...
This is a reference to Saint Thomas Aquinas who was an Italian philosopher and theologian, he is said to be the most influential thinker of the medieval period.
Lead Cave Guy: Evil, good. These are moral absolutes that predate the fermentation of malt and fine hops.
Malt and hops are two of the main ingredients of beer (along with water and yeast). Malt is a germinated grain, usually barley. Hops are the dried ripe conelike spikes of any female flower of the genus Humulus.
Riley: Sets 'em up and knocks 'em down.
This is a reference to bowling (and other similar games), in which one sets up a set of pins, rolls a ball toward them, and tries to knock them all down.
Xander: Gets my Oscar nod.
The Oscars also known as the Academy Awards are the annual presentation of awards from the Academy of Motion Picture Arts and Sciences. The awards are for excellence in film performance and production and the symbol of the award is a small statue called an Oscar. An Oscar is considered the highest honor one can receive in show business.
Willow:...no food, except for this bottle of Wild Turkey which I drunk all up.
Wild Turkey is a line of Kentucky bourbon whiskey, its most common variety is 101 proof as compared to the standard 80 proof for bourbons.
Buffy: Fire bad!
This is an oft misquoted line from the 1931 movie Frankenstein. When confronted with fire, the creature in the film only roars incoherently. When imitating the scene in later years, many comedians inserted the phrase "Fire bad!" to drive home the joke. This has led many people to erroneously believe that the line is actually in the film.
Xander: How much beer would you say a person needed to consume before they started seriously questing for fire?
Quest for Fire is a 1981 film about three prehistoric men searching for a new source of fire.
Xander: (on knowing how to mix drinks) Oh, I've seen Cocktail. I can do the hippy-hippy shake.
Cocktail is a 1988 film starring Tom Cruise as a flamboyant bartender. "Hippy Hippy Shake" is one of the songs featured in the movie.