Brad asking if any of the Transylvanians know how to Madison, and Janet's embarrassed reaction.
Frank's furious reaction to Janet's lack of enthusiasm about Rocky: "I didn't make him... FOR YOU!" Even the other Transylvanians can't take him seriously, laughing in the background.
The entirety of Sweet Transvestite is entertainingly over the top, especially with how absolutely freaked out the sheltered Brad and Janet are by it all.
Riff's constantly stoned demeanor provides a number of moments.
Later, we see him by the elevator pouring a glass of champagne before taking a swig right from the bottle...note Riff can't hold his liquor! Riff can't hold his liquor! then aimlessly dropping it note That's alcohol abuse! before they go up.
The Rocky Roll Call: "Janet!" "Dr. Scott!" "Janet!" "Brad!" "Rocky!" "....."
At one point, when Dr. Scottnote "Cap'n, the transporter's acting up again!" "Dang it, Scotty!" is being magnetically dragged up to the lab, he winds up in Columbia's room, and circles around her and Magentanote RING AROUND THE LESBIANS!, who barely even give him a glance when he's gone.
The face Curry pulls with the line "You look like you're both.. pretty groovy!"
The electric knife. Frank N. Furter cuts no less than THREE SLICES of Meatloaf with it in absolute SILENCE. For a good FIFTEEN SECONDS.
Then when Rocky starts to drink his wine before dinner is fully served, Frank N. Furter revs it threateningly in his direction.
Before that, Riff Raff and Magenta show off their excellent table-waiting skills. "THUNK!"note Hey, can someone give Dr. Scott a fork? He's only got twelve of them!
"Once in a While," a Cut Song. It's a very somber moment, almost tearjerking...and then you see Frank in the background, taking a postcoital snooze while still dressed in Janet's nightgown.
Throughout most of the song "Eddie's Teddy", Frank has this very bored expression on his face, which just seems so wrong and hilarious at the same time. Everyone's singing about a character that he just killed a few scenes earlier, and Frank looks like he could not care less.
Conversely, Frank going completely off the rails chasing Rocky during "Sword of Damocles", and falling over since he's trying to run in high heels.
Possibly unintentional but during the Medusa scene, we hear the line "You're a hot dog" at the exact same moment we get a glimpse of the Brad statue's penis.
Audience partici....pation!
Ever since Audience Participation became an integral part of showings of The Rocky Horror Picture Show, the funniest parts of a performance are usually audience members shouting out something that changes the meaning of the subsequent line in the movie. Perhaps the best example is where Frank says the word "spark" in an especially dramatic way, in a British accent with the "r" dropped. Result: this line is almost always preempted with "Who gives the best blowjobs on the Enterprise?" or something similar.
Sometimes the callbacks respond to each other. For instance, after "I didn't make him... FOR YOU!", some of the audience respond with "SHE GETS HIM IN THE END!" while others then call back "SHUT UP! YOU JUST RUINED IT FOR THE VIRGINS!"
"Michael Rennie was ill The Day the Earth Stood Still, but he told us...note TO FUCK OFF! where we stand... note ON OUR FEET! (ON YOUR KNEES!)
"See androids fightingnote AND FUCKING, AND SUCKING ON Brad and Janetnote 'S TWAT! Anne Francis stars innote DEEP THROAT, THE SEQUEL TOForbidden Planet"
note DESCRIBE THE WHITE HOUSE!"Must be some sort of hunting lodge for rich weirdos."note RICH WEIRDOS AREN'T IN SEASON, ASSHOLE! (TELL THAT TO SARAH PALIN!)
"And crawling note WHERE? on the planet's face note WHAT ARE DISCO PEOPLE? some insects note WHY IS YOUR PHONE BILL SO HIGH? called the human race note OH SHIT, THAT'S US!note WHERE'S YOUR NECK? Lost in time note NAME AN OLD TV SHOW! and lost in space note WHAT DOES THIS FILM LACK? and meaning."note DON'T FORGET TO TURN OFF THE GLOBE!
The response to "Great Scott!" when Dr Scott enters: "Nah, that's just Mediocre Scott. Great Scott can walk."
The Incredibly Lame Pun is further compounded by throwing toilet paper at the screen — as in Scott Tissue, making it a three-way pun.
"On a night out." "IT WAS A DAY'S INN!" "It was a night out..."
"I think perhaps you better bothnote FUCK OFF! ...come inside.note I DON'T CARE WHERE YOU COME, AS LONG AS YOU CLEAN IT UP! (I DON'T CARE WHERE YOU CLEAN IT UP, AS LONG AS YOU COME!
Brad: You're a hotdog,note UP MY but you better not try to hurt her,note WITH YOUR TWO-INCH Frank Furter. (gets Medusaed) Dr. Scott: You're a hotdog,note UP MY but you better not try to hurt her,note WITH YOUR TWO-INCH Frank Furter. (gets Medusaed) Janet: You're a hotdog— (gets Medusaed) Audience: Don't worry, it wouldn't have rhymed anyway!
When Dr Scott circles around Magenta and Columbia:
Audience: HEY, FRANK, WHAT'S YOUR FAVORITE COLOR? Frank: Magenta! Audience: HEY, FRANK, WHERE DO YOU GET YOUR WEED? Frank: Columbia! Audience: BAD CHOICE!
More from the audience:
Brad:(to Riff Raff) Hi! I'm Brad Majors— Audience: ASSHOLE!note "I know that! What's his name?" "That is his name, sir. Asshole. Major Asshole." "Any cousins?" "His cousin's an Asshole too, Sir. Gunner's Mate First Class Phillip Asshole." "How many Assholes we got in this movie anyhow?!?!" "Yo! (Show of Hands)" "I knew it, I'm surrounded by Assholes! ... Keep firing, Assholes!" Brad: —and this is my fiancee, Janet Vice. Audience: SLUT! Brad: Sorry, Janet Weiss. note Schnee? Audience: STILL A SLUT! note "Be careful of who you call slut in high school, or she might just pick up a sword and try to decapitate your crotch or at least disembowel you..." "In that case... Hello. My Name Is Inigo Montoya. You Killed My Father. Prepare to Die..." Audience Member #1: NOT YET, GIVE HER TIME! Audience Member #2: OR MONEY!
The beginning of "Eddie's Teddy" is another quote that's significantly funnier with the Audience Participation.
"From the day he was born..." ("NOT THE NIGHT, BUT THE DAY!") "He was trouble..." ("WITH A CAPITAL T!" / "NOT MONOPOLY, BUT TROUBLE!") "He was the thorn..." ("NOT THE ROSE, BUT THE THORN!") "In his mutter's side..." ("AXL ROSE MUST DIE!" / "NOT THE BACK, BUT THE SIDE!") "She tried in vain..." ("NOT THE ARTERY, BUT THE VEIN!")
The introduction of Riff Raff's verse on "Over at the Frankenstein Place" has the audience request "SING TO US, O HAIRLESS ONE!"
2015 Live Show
In this version, Rocky speaks, and for the Rocky Roll Call, he gets the final line...
*After a few loops of the Rocky Roll Call...* Brad: Janet! Janet: Brad! Scott: Janet! Frank: Rocky! Rocky: PISS OFF!
Frank choking on a pubic hair while trying to say one of his lines during Brad's bedroom scene.
Frank accusing Brad of sleeping with Rocky.
Columbia reaching a high note during Eddie's Teddy, which causes her to break glass, causing the rest of the characters to stare at her.
Mel, one of the narrators, eating a red velvet cupcake.
A scene similar to the Rocky Roll Call, except instead of saying the names of everyone who is in the Role Call, the characters scream as each of them gets the bag with Eddie's remains in it.
Columbia's silly dance routine she does when being sprayed.
Brad: "Why you, what have you done with Janet?!" Audience Member: "FUCKED THE SHIT OUT OF HER!"
Anthony Head shows up as a narrator at one point and delightfully plays off the audience participation, seemingly unfazed. That is, until he delivers the line "what further indignities were they to be subjected to?" and an audience member calls out "Gold Blend ads!" Head's reaction has to be seen to be believed.
In a similar vein, Stephen Fry also appears as a narrator, resulting in interactions such as:
Fry: "The spare tire they were carrying was badly in need of some air." Audience: "A BLOWJOB!" Fry: "Yes, please!"
And also:
Fry: "It was as if she were riding a giant-" Audience: "COCK!" Fry: "I have 'tidal wave,' but 'cock' is better."
Riff Raff's exaggeratedly "fancy", very sarcastic gesture when he says "affairs".
His line about Frank wanting to help Eddie "better his position" is also delivered with extreme sarcasm.
Other stage productions
The Geekenders production (at least, the cast in the youtube recording of it) features a very short Riff Raff and quite a tall Magenta, made even taller by high heels. The effect when they dance together is very amusing.
The Geekenders version of Janet is quite...hyper. She stumbles about in her high heels quite a bit, crashing into Ralph and Betty at the wedding, and generally has very loud and over the top reactions to things. (She's also rather tactless, proclaiming that her ring is nicer than Betty's in front of Betty, who looks rather shocked for a moment.)
Another one from the Geekenders: there isn't really any set to speak of. So, for instance, the car is made up of several people in lingerie posing in an approximate car shape, with two women holding torches in front of their chests as "headlights", and people waving their arms as windscreen wipers. One of the people making up the car shouts "POW!" and collapses when the car gets a flat tyre.
In some versions (both the Geekenders production and the Anthony Stewart Head version do this, though at different points) Riff Raff flips Frank off.
Anthony Stewart Head as Frank dramatically posing in front of the machine in an attempt to prevent Dr Scott from seeing what it is.
Versions of the stage show from the 90s and early 2000s have Frank melodramatically Faint in Shock when he sees Rocky with Janet, normally with Riff Raff failing (on purpose) to catch him. In some versions this includes the dialogue
Anthony Stewart Head often had funny responses to callbacks. For instance after the "Just one big one!" callback, he would sometimes stare at Brad's crotch and say "I think we're being a little over-generous there."