Inflationary Dialogue

This is a numerical claim that mysteriously shifts over the course of a conversation. Note that there are two different ways this can vary--the number can either increase or decrease, and it can either converge on the correct number (in which case this is a form of Verbal Backspace) or start near-correct and end up somewhere wild.

A sure sign of a Bad Liar. Not to be confused with Victor Borge's "Inflationary Language" routine.

Film
"Fletcher: Thank you. Now let's see, weight 105? Yeah, in your bra. ... Samantha: 118. Fletcher: [skeptically waits] Samantha: Alright, fine, I'm 127."
 * Liar Liar has:

"Guide: So now there are three lions in your story? Last time there were only two. Lyle: That doesn't matter. The point of the story is I was outnumbered. African man: (in Swahili) It's easy to be outnumbered when you're a zero."
 * From George of the Jungle:

"Maxwell Smart: I think it only fair to warn you that this building has been surrounded by 130 highly trained Black Ops snipers. Siegfreid: I don't believe you. Maxwell Smart: Would you believe two dozen DELTA Force commandos? Siegfreid: No. Maxwell Smart: How about Chuck Norris with a BB gun?"
 * In keeping with tradition, the Get Smart movie has Maxwell Smart engage in this exchange:

"Cmdr. Drury: Smart, you appear to be in pretty good shape, do you work out? Maxwell Smart: I jog one hundred miles every day! Would you believe it? One hundred miles! Cmdr. Drury: I find that hard to believe. Maxwell Smart: Would you believe fifty? Cmdr. Drury: No! Maxwell Smart: How about two push ups and a deep breath?"
 * Get Smart Again also has this. Twice:

"Maxwell Smart: Because at this very moment, this warehouse is being surrounded by one hundred cops with Doberman pinschers. Would you believe it? A hundred cops with Doberman pinschers. Nicholas Dimente: I find that hard to believe. Maxwell Smart: Would you believe ten security guards and a bloodhound? Nicholas Dimente: I don't think so. Maxwell Smart: How about a Boy Scout with rabies?"

"Porthos: God's blood!! Look at that...! Ruined by you and your, your street-corner ruffians! By God, you'll pay for it! [Rifles the purse of a fallen Guardsman] Ten pistoles it cost me! [Reconsiders on seeing the contents of the purse] No -- twenty! Twenty pistoles! And twenty more, as a fine to teach you manners! Hah!"
 * A subtle one turns up in Brazil. Every time the car Lowry gets out from the motor pool (that is destroyed by vandals) gets mentioned, the exact details become blurred, starting as a Personal Transporter, then Personnel transporter, then finally a whole fleet of personnel transporters that are unaccounted for.
 * In The Three Musketeers 1973 Porthos employs Inflationary Dialogue when he ransacks his enemy's purse after his hat gets ruined in a fight:

Literature
"Vic: It's one of them drug dealer boats... five guys on it, heading our way. Correction, four guys on it. Correction, they're not heading our way anymore. Correction, no boat."
 * In the scene in The Hobbit where the dwarves are introduced to Beorn, Gandalf doesn't want to introduce all of them at once, for fear that Beorn won't be willing to provide them with hospitality if he sees all of them right away. As a result, his account of their prior adventures works this way.
 * Discworld examples:
 * In Men At Arms, a man who gets robbed by an unlicensed thief keeps exaggerating the amount of money stolen.
 * In Lords and Ladies, Casanunda, upon meeting the bandits who robbed him, indignantly claims they stole a horse - he then "remembers" a second horse, and within half a page it's multiplied into four.
 * A variation in The Fifth Elephant, when Vimes confidently (and accurately) predicts his dealing with five bandits on the road will soon have swollen through rumour to 'thirty men and a dog'.
 * In Wintersmith, Tiffany's little brother Wentworth is so excited about catching a pike that its weight increases every time he mentions it.
 * Justified in Snow Crash, thanks to some quality sniping.

Live Action TV
"Interviewer: So, in, er, three years you've spotted no camels? Mr. Sopwith: Yes in only three years. Er, I tell a lie, four, be fair, five. I've been camel spotting for just the seven years. Before that of course I was a Yeti spotter."
 * Monty Python's Flying Circus:
 * The camel-spotting sketch has:

"Smart: At the moment, seven Coast Guard cutters are converging on us. Would you believe it? Mr. Big: I find that hard to believe.
 * The Spanish Inquisition sketch crosses this with Disorganized Outline Speech: "Our chief weapon is surprise. Fear and surprise - Two! Our two chief weapons are fear, surprise and ruthless efficiency - Three!..."
 * "...and nice red uniforms--oh, bugger."
 * The Kamikaze Scotsmen sketch does the deflationary version with the number of Scotsmen in the regiment, as they keep committing suicide until there's only one left.
 * Maxwell Smart of Get Smart tends to use the decreasing version. For example:

Smart: Hmmm ... Would you believe six?

Mr. Big: I don't think so.

Smart: How about two cops in a rowboat?"

"The Doctor: (to Agatha Christie) You fool me every time! Well... almost every time. Well... once or twice... Well... once. But it was a good once!"
 * In Only Fools and Horses episode "He Ain't Heavy, He's My Uncle", Uncle Albert arrives at the flat with a black eye and no money. He says he's been mugged by a gang of youths, but the number increases every time he tells the story. It turns out he lost the money playing dominoes, and then got in a punch-up with his opponent Knock-Knock over Marlene's mother.
 * Done over several seasons in Coupling. Jane says in the third episode that she and Steve dated for four and a half years. The following episode she tells her psychiatrist it was five years. By episode 16 it's six years, at which point Susan corrects her, saying it was only four years. In the series final, she tells Oliver how she met Steve and that they've "been together ever since," possibly suggesting that she continued counting after they had broken up.
 * Doctor Who:

"The Doctor: She's not much to look at, but she's good with a cup of tea. Well... I say good, I mean not bad. Well... I say not bad... The Doctor: Yeah, listen, listen, got to dash... things happening. Well... four things. Well... four things and a lizard."
 * This is practically a Verbal Tic with Ten.

"Uh... twenty or thirty. I mean, depends on the page. About... two hundred. About a thousand, more or less. I mean, on a single page, you mean. Yes, mmm... about ten thousand. I mean, that would be one of the bigger pages."
 * In Jeeves and Wooster, Bertie is trying to pose as author Rosie M. Banks for his friend Bingo's family. Bingo's young cousin asks him how many words there are on a page. Clearly having no idea, he comes out with:

"Sheppard: It's nothing, really. I only killed eleven... twelve Wraith."
 * Sheppard does this in the Stargate Atlantis episode "Sateda". He, Teyla, and Ronon kill a strike force of 25 Wraith. Sheppard initially claims to have killed six of them, but when he learns that Teyla killed eight he quickly ups his claim to nine. By the end of the episode...

"Dick: Oh hello, Mary. I was just thinking about how long I've known you -- ten long years. Mary: It's more like three years. Dick: Well, then you'd be comfortable saying... seven long years. Mary: No, it's three years, Dick. Dick: So I can safely quote you as saying you've known me for six good, verifiable years? Mary: Three. Dick: Fair enough. [later] Dick: I HOPE YOU BURN IN HELL, MARY ALBRIGHT! [runs out of the room and then runs back] Okay, that last bit was a little harsh, but it's been building up for eight long years. Mary: Three. Dick: DAMN!"
 * On 3rd Rock from the Sun, the Solomons got audited by the IRS and became worried that they would be exposed as aliens due to their lack of records from any longer than three years ago. Dick tried to "subtly" make Mary think she had known them longer than that:


 * Happens on Friends s3e4. Joey misses an audition because Phoebe fails to give him the message. She poses as his agent to get him a new audition and Joey asks her to get him one more. Well, two. Five, but that's all. No, it's six.
 * Also, in The One That Could Have Been, the number of Chandler's past sexual partners slowly goes down from four to one during the course of the episode.

Magazines

 * Used in a Mad Magazine article satirizing the Gulf of Mexico oil spill: A letter from BP keeps increasing the number of barrels of oil with every sentence.

Theater
"Hal: O monstrous! eleven buckram men grown out of two!"
 * In Henry IV, part 1, Falstaff does this when describing how many men attacked him (after he robs a bunch of other men, whose numbers he's clearly also lying about). In reality there were two (Hal and Poins); by the end of the scene, he's claiming there were eleven.

Video Games

 * In Animal Crossing: Wild World, Lyle does this when presenting you with a questionnaire: "I got a few questions here. Ten. Actually, less. I got seven. Three. Ready? Bang!"

Western Animation
"Behold, I am Captain Kirk from Star Trek One! [girdle gives way] Two. [girdle gives way] Five [girdle gives way] Generations [girdle gives way completely] Boston Legal."
 * The Simpsons, "The Squirt and The Whale": Comic Book Guy buys a new girdle and wears it under a Captain Kirk shirt.


 * Whopper from Pound Puppies does this at least Once an Episode.

Other
"Jewish Son: Dad, can I have $20 to see a film? Father: 20 bucks? What do you need 15 bucks for? Fine, I will give you 10, here, have your 5 bucks. (hands him 1 dollar)"
 * Take this joke about stereotypical Jewish cheapness (one of many versions of the same joke):

"Police staged the largest drug raid of the decade today, seizing over 8,000 kilos of cocaine. After presenting the 6,500 kilo lode to a grand jury, the 4,000 kilo drug stash is now in secure evidence storage. The presentation of almost 3,000 kilos of cocaine at trial is expected to make quite a splash in court!"
 * Similar one about police procedure:

Real Life

 * This guy at a pet rescue centre, as featured on Not Always Right. No need to worry about the dog jumping over his six foot fence, because it's ten feet tall, and a dog can't jump a fourteen foot fence!