Thank You Santa

 is a song featured during the credits of the episode "Phineas and Ferb Christmas Vacation!" by Mitchel Musso.

Lyrics
Christmas morning,

So much fun!

Down the stairs the children run.

Someone has eaten the cookies,

And look what's left under the tree.

There's presents for you and for me.

As far as the eye can see

What's on the rooftop? I wondered what that was

Its reindeer flying

Around the world

Because Santa's coming

I think we all should pause to say that we're grateful

For everything he does!

Thank you Santa Claus

Thank you Santa Claus

Whoa, whoa, whoa, whoa, whoa, whoa, whoaaa

A song for all the things you do,

Santa Claus we're thankin' you

A song for all the things you do,

Santa Claus we're thankin' you

A song for all the things you do, (Joy to the world!)

Santa Claus we're thankin' you (Reindeer flyin')

A song for all the things you do, (Joy to the world)

Santa Claus we're thankin' you (Reindeer flyin')

(Thank you Santa Claus)

(extended version repeats the verse)

Background Information

 * Agent P receiving a vase as his Christmas present was already foretold by Major Monogram in the episode "Gaming the System".
 * The carolers that were disturbing Doofenshmirtz were also singing during this song.
 * This song was the ending song for the Christmas special, showing Phineas and his friends' appreciation to Santa for what he does.
 * During the line "I wonder what that was", you see the cast imitating the Peanuts Gang from "A Charlie Brown Christmas".
 * Candace gets two more of her usual red sleeveless shirt, white skirt outfits.
 * Irving gets Phineas and Ferb's usual outfits and hugs them the way Candace did when she unwrapped her present (see above).
 * Meap gets a portrait of Phineas, Ferb, and Candace wearing Santa Hats. Meap smiled when he got this.
 * The picture frame that Carl gets from Major Monogram says "To whom it may concern, Merry Xmas! - Major Monogram"
 * Agent P gives Doofenshmirtz a box of almond brittle as he stated earlier in the episode that he loved.
 * Linda Flynn gets a T-shirt from her time as a one-hit wonder (as seen in "Flop Starz"). It was apparently from the "Fun tour".
 * Perry receives a new food bowl from Phineas.
 * The instrumental version of this song plays in the background of some scenes, including the Gadget Golf Winter Holiday edition on the 9th and final hole.
 * Although being Jewish, Isabella received a "Santa's Helper" badge, though she does not celebrate Christmas.
 * Ferb's present (two bouncy balls) looks like a peanut. This may be a joke.
 * Jeremy is playing his new silver guitar while Ferb is playing his new harmonica.
 * Buford and Baljeet give each other presents, and although Buford breaks Baljeet's present, this may mean they actually care for each other.