Cardiac Arrest (or Please Police Me)

I protested my innocence as you read me my rights,
But you still kept me in for a couple of nights -
And now that I''m guilty I just can't get free,
You''ve handcuffed my heart and swallowed the key.
So don't fob me off with your police bail,
Extract a confession and send me to jail.
Now that I''ve had my first brush with the law,
With both hands held up, I''ll admit, I want more.