“Mom's Birthday”
's B-Day
Season 1
Production Code 111A
Airing Information
Disney Channel US Premiere {{{US}}}

Mom's Birthday is the name of the 11th/19th Season 1 episode. It was, as the name says, about Mom's birthday. Meanwhile, Dr. Doofenshmirtz tries to shrink everything that he hates so he never has to see them.

Episode Summary

It's Mom's birthday. Phineas and Ferb have forgotten until they wake up and hear Candace reciting a birthday song. Quickly, the boys come up with a string of plans to create Mom's perfect day. Knowingly or not, they are brutally outdoing Candace, who tries time and time again to give Mom something the boys can't give her.


Dr. Doofenshmirtz's "Shrinkspheria", one of only a few of his inventions to not end in "-inator."

Meanwhile, Perry is summoned to an old abandoned castle where Doofenshmirtz is perfecting his Shrinkspheria to shrink things he hates, like pelicans, ear hair, blinking detour signs, and musical instruments that begin with the letter 'B', to nanoscopic size so that they will basically disappear. His trap for Perry is robotic wax statues of Lincoln and Washington from 'a wax museum that was going out of buisness'. They are programmed to catch and restrain Perry. He succeeds in extinguishing blinking detour signs (causing a moth circus truck to hit a pothole and spill moths out that eat Candace's cute little sundress for Mom) and instruments that begin with the letter 'B' (all the ones Candace plays). Perry stops him by 1.) Dropping a chandelier and melting the wax robots, 2.) Turning off the Shrinkspheria. Then the robot skeletons step on the Shrinkspheria and break it, sending all flying.

In the end, a very dejected Candace enters the yard where Mom, the boys, and several neighbors are watching the boys' multimedia presentation on Mom. Little does she know that for part of it, they taped her! Candace gets onstage with the boys and the Fireside Girls and sings "Mom, It's Your Birthday" with her recorded self. Mom loves it! All in all, it was a very good day for Mom, the boys, and for once, Candace.


Running Gags

The "Too Young" Line

  • (None)

Ferb's Line

  • "It's a simple, post-modern fusion of origami and pop-up."
  • "Shuby-doo,shuby-doo"
  • "You're the one who stays calm"

Whatcha doin'?

  • None... (Isabella doesn't even actually speak in the episode)

Perry's entrance to his lair

  • Perry spins a photo of himself on the wall to go through a secret small door to his lair.

End Credits

The end credits for Journey to the Center of Candace.

Memorable Quotes

“Behold, Perry the Platypus, Shrinkspheria! You like it. I was going to call it the Shrinkinator, but I done that whole -inator thing before, its just been done to death.”
Dr. Doofenshmirtz to Perry
“Pelicans. Terrible creatures. What are you a bird or a garbage disposal?”
Dr. Doofenshmirtz to a captured pelican.


Background Information

  • The 11th episode produced, the 19th episode aired.
  • Isabella was shown on the stage performing, but she was also in the audience at the same time.
  • When Phineas is handing Mom the magazines, he hands her "Mom Biweekly" when he says "Mom Weekly" and "Mom sub-Weekly".
  • Isabella appears in the episode, but we do not actually get to hear her speak.
  • Candace can play the bass, banjo, bagpipes, bongos, balalaika and coincidentally almost every instrument that starts with B.
  • This episode is set to re-air May 10th, 2009, for Mother's Day.
  • For some reason, on some DVR and other digital info for this episode, it says "Mom's Birthday Episode", while it calls "Journey to the Center of Candace" just "Journey".
  • When Linda Flynn is in 90s she is with a guy,rumored to be her first husband.
  • In the backyard beach flashback, Phineas and Ferb are wearing sunglasses and sandles (which Phineas removes before he hits the water). In the episode itself, Ferb stays on dry land.


  • The Horse Whisperer: There is a DVD in Doofenshmirtz' lair titled The Unicorn Whisperer, parodying the 1998 film The Horse Whisperer.


Linda Through the Ages



Previously produced episode:
"Tree to Get Ready"
"Mom's Birthday" Next produced episode:
"Journey to the Center of Candace"
Previously aired episode:
"It's a Mud, Mud, Mud, Mud World"
Next aired episode:
"Journey to the Center of Candace"

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