Lời bài hát: Joan Jett And The Blackhearts. Back It Up.

All I hear is what you're worth
With all those things you had before
All I see is what you are
With all your talks you got you for

Take your time to face the truth
You got no class, you got no couch
What is it that you're trying to prove
Can you tell me

Yeah, can you back it up
Who're you trying to fool
Yeah, you're still talking tough
Show me what you can really do

You're insecure and yeah it shows
And then you think that no one knows
If you only heard yourself
You'd wish that you were someone else

Hey boy, take your time to change your line
You're talking shit, you're wasting time
What is it that you're trying to prove
Can you tell me

Yeah, can you back it up
Who're you trying to fool
Yeah, you're still talking tough
Show me what you can really do

I believe you concede
He's a fag come on, change your act

Yeah, can you back it up
Who're you trying to fool
Yeah, you're still talking tough
Show me what you can really
Show me what you can really
Show me what you can really do