Since Ferb Fletcher is a boy of few words, it is possible to list the occasions in which he has felt it necessary to speak his mind. So far he has only missed speaking in eleven episodes.
- Main article: List of Ferb's lines/Season 1
- Main article: List of Ferb's lines/Season 2
- Main article: List of Ferb's lines/Season 3
- Main article: List of Ferb's lines/Season 4
- Main article: List of Ferb's lines/MarioHasCookies
|Ferb imitates Perry's chatter|
|Phineas: (To Perry) Of course, Ferb and I knew exactly what to call you.|
Young Phineas and Ferb: Bartholemew.
|Phineas: (To Perry) So, not only have you been leading a double life this whole time, but you sat there and let us help an evil scientist open an evil portal into an evil dimension. And you did nothing to stop us?!|
Ferb: Well, he did pee on the couch.
|Phineas: You know, I used to think you couldn't spell "platypus" without "us".|
Ferb: Well, you can, but it would just be Platyp.
|Well, we've had a lot of great days, but we only have one Perry.|
|Sings in Everything's Better with Perry, Summer (Where Do We Begin?) (his 2nd Dimension self sings it also) and Kick It Up A Notch.|
|Jack Black||Fred Red?|
|Seth Rogen||The planet Neptune's atmosphere is made up of what?|
|Tony Hawk||Dinner Bell and Beanpole McGee.|
|Taylor Swift||Top of the morning to you.|
|Regis Philbin||I just wanna say thanks again for the bow-tie Mr. Philbin. How do you think we're going to do in the talk show business?|
|Neil Patrick Harris||Was I just a giant floating baby?|
|Randy Jackson||I always fancied myself as more of an English Bulldog.|
|Emma Roberts||Ah! (Screaming)|
|Cedric the Entertainer||Buford has his own ignitable stats.|
|David Beckham||Thanks, heads up.|
|I just brushed someone else's teeth.|
|Miss Piggy||That's Pig Latin in Pig Latin.|
|Tom Bergeron||I do it everyday.|
|Ty Pennington||Pardon my puns.|
|I think we're done.|
|Shaun White||A beach ball, on a cricket ball, on a bobby's helm, on a bobby, on a horse.|
|Jason Segel||A quintuple threat.|
From outside the series
|The Nintendo DS game||It seemed better than w'ummer.|
|Transport-inators of Doooom!||The journey is the destination.|
|Robot Attack!!!||Hm. It seems all we needed to do was unplug the machine.|
|S'no Problem||That was not the desired result.|
|Or, more specifically, the snow-making machine.|
|Without question, exhilarating.|
|Phineas and Ferb The Movie Game: The Dimension of Doooom!||Is that really the best you could come up with?|
|But that's another story.|
|And they don't even know the half of it until they watch the movie.|
|Oh, Christmas Tree!||Right. Yetis are vegetarians. And they rarely show aggression unless they feel threatened.|
|My Funny Valentine||This is one of my favorite instrumental pieces.|
|Haunted Hayride||Fortunately, this is no ordinary hayride.|
|Just Squidding||Phineas: Just think what might be down there! Hidden treasure? Sunken ships? Old tires? We might even find a whole new species of amphibious life!"|
Ferb: Or, am-Ferbious life.
|Isabella: Buried treasure!|
Phineas: An ancient submarine!
Ferb: A vintage arcade game.
|The Best School Day Ever||Phineas: Now, remember. Safety comes first. Don't try this at home...|
Ferb: Unless it's our home.
|That's Snow Man, That's a Monster!||I have an idea.|
|Ferb's Words of Wisdom||If you don't have anything nice to say, don't say anything at all.|
|Happy Birthday, Perry!||In some cultures, it's considered impolite to beat a figure until its innards fall out.|
|Jailhouse Doof||Phineas: We're gonna break the world land speed record!|
Ferb: ...And then maybe a snack.
|It's Alive!||Nor would be want to.|
|Phineas and Ferb: Barry!|
|Phineas and Ferb Save America||Phineas: Fire at will!|
Ferb: Which one of them is Will?
Phineas: That is such an old joke.
Ferb: Well, we are in 1776.
|Dino-Might!||Phineas: Ferb, I know what we're gonna do today!|
Ferb: Does it involve cloning a dinosaur?
|Bones of Doom||"Well, time is mummy."|
|Rubber Man||Phineas: Don't worry. No matter how far we fall, we'll always bounce!|
Ferb: Unless we were suddenly and unexpectedly transformed into something that doesn't bounce... like a turtle.
|Isabella the Hero||Phineas: Oh no! The main torsion coupling is broken! We're stuck!|
Ferb: And our butter is not properly churned.
|P Versus P||"Is that panda fur?"|
|Phineas and Ferb Spin-Offs||"It's a chance to see the characters you love spread their wings in exciting new arenas."|
|Everything's Better with Perry||Phineas: So remember, any part of your life can be improved with one small addition...|
Ferb: A platypus.
|Go West, Young Ferb||"Eat H2O."|
|Last Episode||"I don't want to be alone. Where's Perry?"|
|Masquerade||Phineas: Oh well. It was fun while it lasted, right, Ferb?|
Ferb: Yeah! Who's Ferb?
|Phineas and Ferb in the Third Dimension||Phineas: Oh well, at least everyone enjoyed the show.|
Ferb: Yes, although it's a bit strange to get popcorn after the movie.
|L.A. Marathon commercial||"Ooh, I just saw Tom Cruise!"|
|"It's On" music video||"Looks like it's on."|
|The Dad-inator||"We should really get a thesaurus."|
|Disney's Phineas and Ferb: The Best LIVE Tour Ever!||
"Have you ever noticed that audience there before?"
Phineas: You know, Ferb. Perry is really something special.
|Milo Murphy's Law|
The Phineas and Ferb Effect
(Here, Ferb was voiced by David Errigo, Jr.)
| Ferb: Looks like it's time to whack some weeds.|
Phineas: Well, somebody's chatty!
Ferb: Murphy's Law?