Short Version:

Team Rocket's Theme Song(from "The Song of Jigglypuff")

(spoken)James: Pump it up to the max.
(sung)Jessie and James: You know us as Team Rocket and we fight for what is wrong...
We're tired of our motto so we thought we'd try a song!
Jessie: Jessie!
James: James!
Both: The speed of light!
Prepare to fight!
Meowth: Meowth, that's right!
James: I am the handsome one.
Jessie: I'm the gorgeous one!
Both: Looking good is lots of fun!
We get some things wrong, but we keep rolling along!
Jessie, James, and Meowth: We want to capture Pikachu, we hope to do it soon.
And when we do, we'll be the new stars of this cartoon!

CD Version:

Giovanni: This is the boss and I'm sick of waiting. I want Pikachu, and this time, don't screw it up!

Prepare for trouble
Make it double
Prepare for trouble
Make it double

We'll be the richest rogues of all time
Creators of a grand design
James: I'll be the king
Jesse: I'll be the queen
Meowth: I'll be da joker... of crime

Prepare for trouble
Make it double
Prepare for trouble!
Prepare for trouble
Make it double!
Make it double

Jesse: To protect the world from devastation
James: To unite all peoples within our nation!
Jesse: To denounce the evils of truth and love!
James: To extend our reach to the stars above!
Jesse: Jessie!
James: James!
Jesse: Team Rocket blasts off at the speed of light!
James: Surrender now, or prepare to fight!
Meowth: Dat's right!

Team Rocket's rockin'
Talking trouble, walkin' trouble
Double trouble, big trouble
is gonna follow you

Team Rocket's rockin'
Talking trouble, walkin' trouble
Double trouble, big trouble
is gonna follow you

We're gonna capture Pikachu!

Prepare for trouble
Make it double
Jesse: Prepare for trouble!
James: Make it double!
Prepare for trouble
Make it double

We're Team Rocket and we fight for what's wrong
For mayhem, and madness, and rare Pokemon
Jesse: I'm so gorgeous!
James: I'm always the man!
Meowth: You're just the players in my master plan!

Team Rocket's rockin'
Talking trouble, walkin' trouble
Double trouble, big trouble
is gonna follow you

Team Rocket's rockin'
Talking trouble, walkin' trouble
Double trouble, big trouble
is gonna follow you

We're gonna capture Pikachu

James: We're always gonna try it
No-one can deny it
We can cause a riot in
Sunday school (James: ooh, a riot!) and
James: We'll have you believin'
Truth can be deceiving
'Do unto others' is our golden rule!

Jesse: This is our most ingenious plan ever!
If I do say so myself...
James: Even we couldn't screw this one up, Jessie.
Meowth: Would you two stop yappin'? Here dey come!

Prepare for trouble!

Team Rocket's rockin'
Talking trouble, walkin' trouble
Double trouble, big trouble
is gonna follow you

Team Rocket's rockin'
Talking trouble, walkin' trouble
Double trouble, big trouble
gonna capture Pikachu

*repeat constantly*

"Looks like Team Rocket's blasting off again!"

Thanks to Unknown