* In Creator/AynRand's play ''Night of January 16th'', Karen Andre, accused of murdering Bjorn Faulkner, is nearing the end of her testimony, when the SurpriseWitness barges into the courtroom. Karen frantically tries to prevent him from saying anything, but he tells her, "Your sacrifice is useless: Bjorn Faulkner is dead." Karen faints from this revelation, and the curtain falls on the second act.
* ''Theatre/TheBookOfMormon'': [[spoiler: "I'd do anything for you, you're my best friend."]]
** There's another one in "Hasa Diga Eebowai". The first 15 or 20 minutes seem like a complete comedy that just glosses over any darker issues, but then, in the middle of all the [[CrossesTheLineTwice hilarious blasphemy]], the Ugandan villagers [[BreakingTheFourthWall sing directly to the audience]], [[spoiler: "If you don't like what we say, try living here a couple days. Watch all your friends and family die--hasa diga Eebowai!"]] It's the first indication of the show's quite serious themes.
* The end of act I of DavidMamet's ''Boston Marriage'': [[spoiler:"She asks why you are wearing her mother's necklace".]]
* ''Humble Boy'': "Mother?...Mother, [[spoiler:please tell me you can see him.]]"
* ''{{Cabaret}}'': "But if you could see her through my eyes...[[spoiler:She wouldn't look ''Jewish'' at all.]]"
* ''Theatre/{{Hamlet}}'': "...revenge his foul and most unnatural murder."
* ''{{Theatre/Godspell}}'': "This is the beginning."[[spoiler:...of the end. Jesus says this to tell the community that was built during Act 1 that he's going to leave them to see if they retained the lessons learned from his teachings. And it all goes downhill from there, ending in His Crucifixion.]]
** Also, the line right before "On the Willows": [[spoiler: "And I tell you I shall never again drink from the fruit of the vine until I drink it again with you in the Kingdom of my Father." Jesus then says goodbye to the rest of the cast.]]
** "Then the man they called Judas Iscariot went to the chief priests, and said "What will you give me to betray Him to you?" They paid him thirty pieces of silver ó and from that moment, he began to look out for an opportunity to betray Him." (Matthew 26:14-16, KJV) The line signifies the transition from John to Judas.
** The final line of the speech is accented with a percussive sound not unlike DramaticThunder.
* From ''Theatre/{{Wicked}}'': 'You have no real power,' as well as a WHAM moment when Glinda shows the Wizard Elphaba's keepsake, [[spoiler: identifying him as her father, moments after having had her murdered.]]
** Another one takes place at the end, at the site where Elphaba made her last stand. [[spoiler: The Scarecrow comes on stage, knocks on the floor]], and says two words: [[spoiler:"It worked!" Elphaba, alive and well, comes up through a trap door and reunites with her beloved Fiyero before they make plans to flee to Earth.]]
* From David Auburn's ''Proof'': "I didn't find it. [[spoiler: I wrote it."]] End Act 1.
* ''NextToNormal'': "Whose birthday is it?" "My brother's." [[spoiler: "I didn't know you had a brother." "I don't. He died before I was born.]]"
* ''{{RENT}}'': "AZT Break." [[spoiler: How Mimi reveals to Roger she has AIDS.]]
* ''Film/SunsetBoulevard'' actually has a Wham ''Song'', specifically "New Ways To Dream (Reprise)," in which Max fills in all the remaining holes relating to Norma's past. The biggest WhamLine within the song is probably "Please, understand, she was [[spoiler: my wife]]."
* ''Theatre/{{Tosca}}''! Finalmente mia...[[KilledMidSentence aaaaaaargh!]]
* ''Theatre/{{Rigoletto}}'': The reprise of "La dona e mobile", telling us and Rigoletto that the body in the sack isn't who he thinks...
* In ''{{Urinetown}}'', [[AllKnowingSingingNarrator Little Sally asks Officer Lockstock]] what Urinetown is like. In the interest of [[MediumAwareness maintaining dramatic tension]], Lockstock ''tries'' to avoid answering the question, telling her "Look, its power depends on mystery. I can't just blurt it out, like '[[spoiler:There is no Urinetown! We just kill people!]]'"
* ''Theatre/TickTickBoom'': Jon gets angry with his best friend Michael and screams, "What the hell do you know about fear? What do you know about anything?" Michael responds, [[spoiler:"I know I'm sick, Jon, and I'm not going to get any better."]]
* ''Theatre/SweeneyToddTheDemonBarberOfFleetStreet'':
--> '''The Beggar Woman''': [[spoiler:Don't I know you, mister?]]
** And late on in the story:
--> '''Sweeney''' (Theatre Version): [[spoiler:Oh, God! "Don't I know you", she said... You knew she lived...! ''From the first moment that I walking into your shop you knew my Lucy lived!'']]\\
'''Sweeney''' (Film Version): [[spoiler:"Don't I know you", she said... You knew she lived... ''You lied to me.'']]
** To a lesser extent, the line that marks the exact moment Sweeney turns from an AntiHero to a VillainProtagonist:
--> '''Sweeney''': There's a hole in the world like a great black pit and it's filled with people who are filled with shit and the vermin of the world inhabit it... ''[[PutThemAllOutOfMyMisery But not for long]]...!''
* ''Theatre/RomeoAndJuliet'': "I could not send it, here it is again."
* ''Theatre/LesMiserables'': "[[NotSoDifferent You know nothing of Javert, I was born inside a jail! I was born with scum like you, I am from the gutter too!]]"
** Another gutting Javert line: "And does he know... that, granting me my life today [[spoiler: "this man has killed me, even so?"]]"
* ''AllMySons'': "Your brotherís alive, darling, because if heís dead, your father killed him."
* ''Theatre/MissSaigon'': "I'm Chris' wife. My name is Ellen". The audience already knows this, but the line clearly has this effect on Kim.
* ''Theatre/ARaisinInTheSun'': [[spoiler: [[WithFriendsLikeThese "When a cat take off with your money, he don't leave you no road maps!"]]]]
* ''Theatre/{{Macbeth}}''
--> '''Macduff''': Despair thy charm, and let the angel whom thou still hast served tell thee, Macduff was from his motherís womb untimely ripped.
* ''Theatre/AlmostMaine'' has quite a few, but one that stands out is one of the characters who [[FeelNoPain can't feel pain]]:
--> ''Ow.''
* ''Theatre/TheLightInThePiazza'': "When Clara was twelve, we rented a Shetland pony for her birthday party. She and her friends were leading the pony around... [[spoiler: [[ChildhoodBrainDamage and the pony kicked her!"]]]]
* ''Theatre/WhosAfraidOfVirginiaWoolf'': "[[spoiler: Our son is ''dead'', just like that!]] How does that make you feel?"
* ''Theatre/CharlieAndTheChocolateFactory'' ends with a Wham Song, the TriumphantReprise of "It Must Be Believed to Be Seen". The reprise reveals first that [[spoiler: the tramp at the dump whom Charlie befriended was Willy Wonka in disguise -- same actor and all -- which means he rigged his own Golden Ticket contest and was secretly on the boy's side all along]], and second that [[spoiler: Mr. Wonka's retiring from running the factory so he can pursue new dreams...''in the audience's world''...which he can travel to -- and does -- simply by way of an ImaginationBasedSuperpower]]. While a few hints to the first revelation are there for sharp/GenreSavvy viewers (they at least make for some RewatchBonus), the second revelation is a definite surprise. (It helps that none of this is in the novel or either film adaptation of same.)
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