Lately I've been having fun pronouncing words as if they were German, even when they aren't. So far, my favorite is “wormhole”.
Phineas and Ferb are hanging around in the backyard. Isabella shows up and asks them what they're doing. A discussion ensues, in which Phineas gets a brainwave: “Ferb, I know what we're going to do today!” It's always something very large and bizarre:
Candace finds out what the boys are doing and vows that this is the day she will bust them, by having their mom catch them in the act of this bizarre escapade. Around this time Phineas asks “Hey, where's Perry?”
Perry is the boys’ pet platypus who, unbeknownst to them, has an alter ago: he is the celebrated “Agent P”, attached to a secret crime-figting organization. Perry has disappeared through one of the numerous secret exits located throughout the house and yard and gone to the secret underground command center where he receives his mission briefing from Major Monogram. Almost always, Perry's evil nemesis, Dr. Heinz Doofenschmirtz, has a new plot for achieving his perrential goal of taking over the Tri-State Area. Perry proceeds to the lair of Dr. Doofenschmirtz and is promptly caught in a trap while Doofenschmirtz explains his latest evil scheme.
At this point things start to vary a bit, depending on the details of the boys’ project and Doofenschmirtz’ evil scheme. But usually Perry breaks loose and defeats Doofenschmirtz, in the process destroying the doomsday-device-of-the-week and also coincidentally erasing all the evidence of the boys’ project just as Candace is going to display it to their mother.