Phineas and Ferb help their grandfather relive his glory days as a daredevil.

Meanwhile, Dr. Doofensmirtz tries to get revenge on a childhood bully.
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!!Tropes
* AddedAlliterativeAppeal: The bully Doof wants to get revenge on is called Big Black Boots Boris the Bully.
* BritishTeeth: When Grandpa Reg's third jump gets cancelled, two of the bystanders watching say:
--> '''Bystander 1:''' Let's go.
-->'''Bystander 2:''' Yeah, I've got teeth not to brush.
* CoolBike: Grandpa Reg's Holy Mackerel.
* CueTheRain: Whenever the Fishmonger's anthem is played, it causes instant rain due to its sultry sound. Phineas cranks it up a notch by reworking it into a wicked rock ballad.
* EmpathicEnvironment: It turns out that all of The Flying Fishmonger's attempts to jump [=McGregor=]'s Gorge were rained out because his theme song was too dreary.
* EvenTheSubtitlerIsStumped: Throughout the episode, Ferb must translate most of his grandfather's English slang into American vernacular. At the very end, as grandpa Reg is explaining how Phineas and Ferb fixed up his old motorcycle to let him fulfill his dream of jumping [=McGregor=]'s Gorge, Ferb says he has no idea what he just said.
* ExtraExtraReadAllAboutIt: A newsboy attempts to distribute papers explaining what's going on to people, but as the events keep changing rapidly in real time, he gives up.
* ExtremeCloseUp: When Carl attempts to cut to a close-up of his face while delivering Perry's mission, he accidentally zooms into his eye.
* TheFaceless: All we ever see of "Big Black Boots Boris" is his legs as he kicks sand in Doof's face.
* {{Irony}}: The bully kicks sand on Doofenshmirtz's face at several places but not at the beach.
* SeparatedByACommonLanguage: Ferb has to 'translate' for Grandpa sometimes, although even he gets stumped at the end.
* StorefrontTelevisionDisplay: While Candace is out shopping with Linda, Lawrence and Winifred, she passes a storefront TV and witnesses the ad promoting the jump of the Flying Fishmonger over the gorge in the Flynn-Fletcher backyard. Candace brings Linda back to see, but right when she does so, it quickly switches to another ad promoting pore paste, to which Linda comments Candace's pores aren't ''that'' big.
* StylisticSuck: The Flying Fishmonger's theme song, so much so that the song conjures up rain whenever its played.
-->'e's a fishmonger an' 'e flies...
* WhatHaveWeEar: Grandpa Reg does this to Ferb, but instead of a quarter, he pulls out his scrapbook, which is too large for the trick to realistically work.
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