Maybe Needs a Better Title. Bob brags about some skill he possess, or some impressive feat he pulled off in the past. The other characters roll their eyes at the time, but they remember. Eventually, their plans will depend on that skill, at which point Bob will confess that his original claims were very overstated, if not completely fabricated. What separates this trope from Fake Ultimate Hero is that, by the time Bob is exposed, the initial plan is completely past the Point of No Return, so Bob is the Closest Thing We Got and thus has no choice but to attempt to live up to the original boasts. Of course, since it's a Million-to-One Chance, Bob does just fine.
Rolling Updates ahoy:
- íThree Amigos!: Ned mentions that a passing biplane is the same kind that he flew in one of his prior movies. At the end, the other Amigos need him to fly this plane to escape from El Guapo's army. Ned confesses that it was his stunt double who actually flew the plane. They climb aboard the plane anyway, and Ned flies like crazy.
- Chicken Run: Fowler talks constantly about the time he spent in the Royal Air Force. At the end, the chickens expect him to pilot their homemade aircraft to freedom, and he admits that he was in the Air Force as a mascot, not a pilot. He ends up flying anyway.
- In Memphis Belle bombardier Val has not exactly gone out of his way to deny that he is almost qualified as a doctor, even if he never specifically claims so. When Danny is wounded during the mission and the others look to Val to save him, he finally fesses up, admitting he only took two weeks of medical school before enlisting. The Captain, Dennis, gives him a speech about how he's the closest thing they got, and he goes off to save Danny's life...
- In Snakes on a Plane, Troy claims to be able to fly a plane, and have logged hundreds of flight hours. And then it turns out that actually, he was talking about a PS2 game, but he manages to land the plane anyway.
- A Star Trek: Deep Space Nine novel once featured Sisko bragging about being able to hit a target with a phaser blast using a mirror. Later, that exact situation crops up on the station (with Odo becoming the mirror); Sisko pulls the stunt off but afterwards admits he had exaggerated his ability.
- Ciaphas Cain is constantly on the revieving end of this because of his (partly accidental) status of a Fake Ultimate Hero. The best example probably being in the first novel, when his friend assumed he'd want to sneak into an enemy camp for fun (although he is quite competant he's also an admitted Dirty Coward).
- In the book series Septimus Heap, a ghost asks Septimus if he can perform a certain spell and he says "almost"--not because he knows anything about the spell, but because he knows the ghost will get horribly upset if the answer is "no". Of course, later on they need the spell to heal a dragon-boat and they scramble to make the spell work based on previous reasearch he made because he was curious.
- Mystery Men: Mr. Furious supposedly has the superpower of rage-induced super-strength, but, when called on it near the end of the film, he reveals it's all an act. However, when facing off against the Big Bad, he becomes genuinely furious and starts kicking ass.
Hello, Unknown Troper. You'll need to get known to lend a hand here.
Three days must pass before this YKTTW is Launchworthy or Discardable