What's The Use

&nbsp WHAT'S THE USE is a song sung by Gabriella. She sings it to Candace in The Worst Day Ever when Phineas and Ferb's machine suddenly disappears.

Lyrics
What's the use if you just pass

And look at your magnifying glass

Something was just thought to last,

But now it's finally gone

It's something you really want to find

But when mom finds out

Everything gets out of my mind

That's all I'm talkin' about

Every day I wake up

And find that there's something

In my backyard,

Is it a bird? Is it a plane?

Oh, I'm goin' insane, yeah!