"Dull Surprise!"— Explanation A reference to Kathy Ireland's only apparent facial expression in the movie. This is actually a migratory meme, as it is used by the Transformers fandom when referencing Dreamwave comic book art and similar artwork with dull expressions.
"BUH-BOOM!" Explanation When film hero Red talks about how he and a Marine pilot worked in tandem to take down the first monster and the missile explosion that finished it off. It's become a standard response to seeing an explosion.
"He tampered in God's domain." Explanation Said, in a somewhat garbled manner, of Bela Lugosi's scientist character. Became a running gag in other MST3K movie scenes where other mad scientists would meet their end.
The Sampo! Explanation The Sampo is a Finnish mythological device, the purpose of which is completely unknown (most translators claim it creates wheat, gold, and salt... but that's just a blind guess).
The words that Joel and the bots sing to the music at Lemminkäinen's wedding...
Watch out for snakes! Explanation An obviously and oddly dubbed-in line seemingly only put in the movie to make some stock footage of snakes fit. Joel and the Bots get quite confused at who the heck is supposed to be saying it.
"LEAVE THE BRONX! LEAVE THE BRONX! You are ordered to LEAVE THE BRONX!" Explanation At the start of the film, these lines are repeated so often as to become an unintentional Overly Long Gag
On this wiki, at least: The Toblerone. Explanation A mishearing of the name Dablone, a loveable boisterous bruiser who is one of the bright spots in the movie.
"This is the song written for the train chase, this is the chase, Rocky and Ken. HE TRIIIIIEEEDDDD TO KILL ME WITH A FORKLIFT...! Explanation A song sung to the not-so-thrilling chase music of the movie.
OLE!
"Ha-ha-ha-ha-ha-ha, a-ha-ha-ha-ha-ha-ha-ha-ha... YOU'RE STUCK HERE!"Explanation The incredible Mood Whiplash when the Captain of the defense force blows up at Ken, whose invasion force killed his wife and kid.
He's a Kenny.Explanation The Tagalong Kid of this and many other monster movies are collectively referred to as Kennys, after the boy in this one. They're irritating, are inexplicably accepted anywhere they go, and often wear shorts.
"Sing whenever I sing, whenever I sing." Explanation A lame song that the mechanic main character sings throughout the movie and inexplicably becomes a smash hit. Would be brought up in repetitive music moments in other MST3K films
SANDSTOOORM ... SANDSTOOOOOORMExplanation The Mads use these lines as a vague warning of the film's "sandstorm" scene.
The "Pants" Song Explanation The sight of so many men in togas and tunics throughout the movie inspires Joel and the Bots to perform a song devoted to pants.
"HA HA HA HA! YOUR COSTUME IS RIDICULOUS!" Explanation Said in response to the Neptune Men's costumes. Along with "There, sure glad I don't look stupid in this", the line has become a running joke on Atop the Fourth Wall to comment on silly costumes.
"They took out the Hitler building!" Explanation The Hitler Building comes from stock footage of the 1960 Japanese film World War III Breaks Out, which the crew and a lot of viewers mistook for actual World War II bombing footage.
"Oh, I know a song about stock footage! Goes like this...Dada dada dada EAT IT MOVIE!"
"He learned too late that man is a feeling creature and because of this the greatest in the universe..." Explanation Peter Graves' ending speech. Was repeated several times at the end of the show to kill time.
"Rock climbing, Joel." Explanation An incredibly long and boring scene of the leads climbing a canyon wall. Would be brought up in other MST-ings as a sign that things are getting repetitive.
Fans love to represent the oddly stilted speech of Torgo from Manos: The Hands of Fate (including Mike Nelson's impersonations of him) bY rANdoMLy cAPitALIzInG lEttErS.
The Master would not approve.
The haunting "Torgo Theme". Explanation A incessently repetitive 4 note piece of music.
"There is no way out. It'll be dark soon. There is no way out. iT'lL Be DaRk SoOn!"
The show's treatment of Pod People spawned the famous "Potato Soliloquy". Explanation Crow does an Emo Phillips/Elephant Man impression while Trumpy the alien checks out the things (mostly pets) in the kids room, apparently looking for something to eat.
And [puts thumb and index in the OK position] IT STINKS! Explanation A main character's sarcastic reaction to a song performed in the movie. Would be used as a call back to any appearance of the A-OK hand gesture. Where the movie was filmed at, the OK position is also the equivalent of flipping someone off.
Trumpy, you can do stupid things! Explanation Trumpy the Alien's magical powers are... unimpressive.
Beastmaster? Ringo? Axel? Sinead? Chief? McCloud! Explanation Joel and the bots reaction to people shouting out the names of whoever they're looking for in the scene is to rattle off pop-culture references, ending with a reference to McCloud
"Your weapons have no effect on me!" Explanation The Prince of Space seems to take a little too much glee in No Selling any enemy attacks.
Each! Of! You! Will! Enter! A! Space! Capsule! Explanation The scientists the Prince rescues constantly ask him "What?" whenever he tells them what to do, leading Tom to say "Oh, for crying... EACH! OF! YOU! WILL!..."
We like it very much.
"Heeeeeeh heeeeeeh heeeeeeh!"Explanation Villain Krankor's distinctive laugh, described on the MST3K web site as "like a Buick not turning over."
"BAKAWWWW!"Explanation Krankor also bears an unfortunate resemblance to a giant chicken.
The dinosaurs died out because they didn't know how to love each other.
Are pumas known for their whining?Explanation Puma Man is constantly outclassed by his Native American sidekick.
Every great hero just wants to be left alone!
I get this way when I sense danger. Explanation Mentioned once in the start, then followed throughout by a number of times where Puma Man notably fails to sense impending danger. Tom Servo is happy to point it out.
I'm Cherokee Jack!Explanation Said by a very NOT-Cherokee looking fellow.
Shove off! Explanation This is about as salty as the language of the supposedly hardened convicts gets.
YOU shove off! Explanation Whenever the commander of the Cuban invasion force talks about "shoving off" (re: heading out to sea), Mike and the bots would respond with this.
"Dinobot has spoken. My rigid grill structure is coming in on your unprotected cargo door." Explanation A Transformer fan accidentally conflagrated a "Dinobot Has Spoken" line with this quip given during an oddly suggestive trucking scene. Ironically, Dinobot'svoice actor DID say this line on request.
"NO, LUPITA!" Explanation During the movie the devil tries to tempt an aggressively cute girl named Lupita into committing sins. The narrator really doesn't like it.
This has gone to such a level that all of the names used are usually taken on any popular MMO. Quite an achievment since there are over thirty of them.
Railing Kill! Explanation More than the fair share of deaths in this movie feature being knocked over a railing.
Ow! My mask! Explanation Crow's riff when David Ryder punches a Mook in the face.
"Listen, lady!" "Doctor!" "Doctor lady!" Explanation Another Crow riff, when Lea corrects Ryder over her "title"
"There. Sure glad I don't look stupid in this."Explanation Said after Quintus mugs a knight for disguise, looking very stupid in it. Atop the Fourth Wall uses it when a character in a comic has a particularly bad outfit.
This is absolutely fascinating... Explanation The female lead doesn't quite add the emotion to the line that you might expect. Her odd accent doesn't help either.
TUSK! Explanation Over the tribal chants that play during the credits, Mike and the Bots sing an impressive medley of songs that fit the rhythm, tied together by shouts of TUSK!, a reference to Fleetwood Mac
You is a wurwilf/warwelf/worwilf/waerweilf! Explanation No character in the movie seems to give "werewolf" the standard English pronunciation.
"Where did the rubber band go!?" Explanation A marriage counselor uses a stretching rubber band to illustrate the psychological difference between two kids not ready for marriage. When the thing snaps, those kids seem genuinely confused as to what has happened.
"You saw my boing?!"Explanation Based on the counselor's choice of words when verbally illustrating the above and suddenly declaring, "Boing!"
Why don't they look?Explanation After a train hits a car, killing the main character due to his negligence, the train conductor laments "Why don't they look?", leading to Tom's response, "You're deep, Ernie."
Robot RUMP?!? Explanation The title screen for the short features a robot painting the title onto a garage, but when it fades in, only "Robot Rump" is shown, leading to Unfortunate Implications before the "u" and "s" are painted on, something which the bots are quick to point out.
Gumby was nude!
This way we don't have to hire illegal immigrants.
That really squares my breasts.
Others
"You know you want me, baby!" Explanation Crow's attempt at making a catchphrase in order to sell shirts he made with the phrase on them. This came about after the official fan club had trouble moving such shirts, due to them using this line instead of anything Crow actually ever said.
Nobody understands me baby ... I'm the wind!
Mike broke the Hubble! Mike broke the Hubble!Explanation :Tom and Crow taunt Mike for his physics-breaking destruction of the Hubble Satellite
"Hike up your pants just like mine!" Explanation While watching Daddy-O, the protagonist sings a lame song and the gang notice that his pants are extremely high-waisted. Later, Joel spoofs this by singing a song about wearing high-waisted pants.
In a more meta sense, the show help popularize the concept of MSTing itself, though it's been around for years before the show.
Speaking of which, MSTing made "The Long March" palatable, and "The Long March" led to its own fountain of memes, such as (X despite the name), in a reference to "Ashley Montagu (Jewish despite the name)".
All over the world! Explanation Joel did this as an homage to standup comedian Michael Floorwax, who himself became a frequent callback on ESPN's MST3K-like show Cheap Seats. M&TB closed the loop by appearing in Cheap Seats' season two premiere and mocking the hosts' dancing abilities.
Think about it, won't you? Thank you.
You're not my real father! Explanation Crow's random reaction to Joel saying "I love you guys"
Taking a still from a particularly bad YouTube video (bonus points if people on a forum are already picking it apart) and pasting the silhouettes of the characters and theater over it shows up now and again.
Sandy Frank! Sandy Frank! He's the source of all our pain!Explanation Sandy Frank had produced/distributed many of the most infamous films the show has spoofed. (5 actual films, 4 CompilationMovies, about one third of Seasons 0 and 3)
Oh, I'd hate to shoot a butt like that!Explanation Said jokingly by Joel during a gratuitous scene of pandering to the audience by showing off the (female) protagonists' behind while the (male) antagonist has a gun. Later said jokingly any time a gratuitous butt shot is shown, regardless of the character's gender.
Jack Perkins and Peter Graves even more than they were before.
Jack Perkins' main feature, according to this show, is his tendency towards trailing off his monologues with long rambling anecdotes—Perkins has never done this in real life, but to hear MST fans talk you'd never know it.
During Perkins' tenure on Biography, he did have a tendency to be overly fawning toward whoever was the subject of said biography, no matter how small their contribution to society at large. He could make you believe Touch Connors was as important as Abraham Lincoln.
"Crow Syndrome" which is far more common in MiSTings than it ever was in the show. Crow (or some other character, what matters is that it's always the same one) will make an especially insensitive or off-color joke and will be reprimanded with a shout of "Crow!"
Bite me- it's fun!
"They're on a collision course with WACKINESS!"Explanation In the early seasons, Joel would use this line to riff on intersecting plot lines, as if whatever film they were watching was some wacky sitcom.
Crow's head in the theater is a famous example of a transparency optical illusion, as it can easily appear that he's facing away from the screen, to the point that it was included in the FAQ of the Fan Club's website.
Explanation 
