"I Just Can't Wait to be King"
All rights go to Disney, the creators of "The Lion King", and bacondipped for recommending the song.

Firestar: I'm gonna be the best leader
So enemies beware!

Dustpelt: I've never seen the ThunderClan leader
With such a kittypet stench

Firestar: I'm gonna protect my Clan
Like no one has before
I'm brushing up on looking down
I'm working on my
YOWL!

Tigerstar: Thus far a rather uninspiring thing

Firestar: Oh I just can't wait to be a leader

No one saying "Do this!"

Sandstorm: Well, what Tigerclaw meant was-

Graystripe: No one saying "Be there!"

Sandstorm: Now wait a second-

Firestar: No one saying "Stop that!"

Sandstorm: Stop that!

Both: No one saying "See here!"

Darkstripe: See here!

Firestar: Free to run around all day

Tigerstar: That's not okay

Firestar: Free to do it all my way

Bluestar: I think it's time that you and I arranged a heart to heart

Graystripe: Leaders don't need advice from little warriors for a start!
OOPS!

Tigerstar: If this is where the monarchy is headed
I'm taking over
I'll be deputy, then leader
Just watch and see
This kittypet is getting wildly out of paw

Firestar: Oh I just can't wait to be leader

Everybody look left

Graystripe: Everybody look right

Firestar: Everywhere you look I'm

Both: Standing in the moonlight

Sandstorm: Not yet

ThunderClan: Let every cat go for broke and yowl
Let's hear it in the Clans and in the forest
It's gonna be Firepaw's finest fling

Firestar: Oh I just can't wait to be a leader

Graystripe: Oh he just can't wait to be a leader

Firestar: Oh I just can't wait

Graystripe: Just can't wait

ThunderClan: To be a leader!