Answer:
I'm the source of all emotion, but I'm caged in a white prison.
When someone uses this acronym, you know you've got to pick up the pace
Spies and detectives do this to phones and musical shoes make this sound.
What can you easily break but never touch?
What is something you can give away as many times you want without ever losing it?
Special abilities and brightly colored underwear are all you need to be one of these.