When Tomorrow Is This Morning Again Phineas and Ferb (Ft. Candace & Dr. Doofenshmirtz)

Doofenshmirtz: They say you only go around once
They say that opportunity, it never knocks twice!
But if there's one thing I can say about the people who say that:
They don't have this cool device... !
(They don't have this cool device, they don't have this cool device!)

Candace: I've never even heard of déjà vu this bad
But everything today is so familiar
Like the best recurring dream I ever had
Like when you know it's gonna happen but it's still gonna thrill ya

If it keeps repeating, I should do something about it
I don't know the repercussions if I just let it run
If you told me there'd be consequences, I wouldn't doubt it
But it's tempting just to let it go and use it for fun... !
(Use it for fun, use it for fun!)

Doofenshmirtz and Candace: I can get it right
Because today I have multiple chances
Candace and Doofenshmirtz: With just a little foresight..
Doofenshmirtz and Candace: My means will justify my ends

Candace and Doofenshmirtz: My worries will be over soon!
Doofenshmirtz and Candace: I'll rework my fate
Improve my circumstances!